Isuzu Diesel Engine Specs: Practical Guide for Fleets, Mechanics & Heavy Equipment Owners

Key Takeaways

• Isuzu diesel engines range from 11.8 hp small industrial units to 512 hp off-highway powerhouses, with common displacements including 2.8L, 3.9L, 5.2L, 7.8L, 9.8L, and 15.7L.
• The main engine families covered in this guide—4JB1, 4BD1, 4HK1, 6HK1, 6BG1, 6UZ1, and 6WG1—share basic architectures but offer multiple variants for different power and emissions requirements.
• Modern Isuzu industrial and commercial engines can meet Tier 4 Final and Euro V emission standards through high-pressure common rail injection, EGR, DPF, and SCR aftertreatment systems.
• Fab Heavy Parts focuses on supplying high-quality replacement parts and components—not whole vehicles—using OEM-level specs to match pistons, injectors, turbos, and other critical components correctly.

 

Introduction

This guide covers essential Isuzu diesel engine specs for fleets, mechanics, and heavy equipment owners. Whether managing a fleet, repairing vehicles, or owning heavy machinery, understanding these specs is key for maintenance, repairs, and sourcing parts.

 

We focus on popular Isuzu diesel families: 4JB1, 4BD1/4BD2, 4JJ1, 4HK1, 6BD1, 6BG1, 6HK1, 6UZ1, and 6WG1, detailing horsepower, displacement, torque, aspiration, and key features.

 

Isuzu diesel engines are known for reliability, durability, and fuel efficiency in medium-duty trucks like the NPR and N-Series, as well as industrial equipment including excavators and forklifts. Knowing these specs helps keep equipment running smoothly and compliant with emissions standards.

 

Overview of Isuzu Diesel Engines

Isuzu's Legacy in Diesel Power

Isuzu Motors Limited has built a strong reputation for rugged diesel engines since the mid-20th century. Starting with commercial vehicles after World War II, the company shifted focus from military trucks to civilian markets.

 

Today, Isuzu diesels power a wide range of equipment—from Isuzu Elf light trucks and delivery vans to excavators, wheel loaders, cranes, generators, and marine applications worldwide.

 

Isuzu Diesel Engine Applications

Isuzu diesel engines are widely used in medium-duty commercial trucks, particularly the Isuzu NPR and N-Series models. They are also found in a variety of industrial applications such as excavators, cranes, and forklifts. This versatility makes Isuzu engines a top choice for fleets, mechanics, and heavy equipment owners who demand reliability and performance.

 

Power Range and Displacement

The Isuzu diesel engine lineup is impressively broad. Small industrial units start at around 11.8 horsepower (8.8 kW) for compact generators, while heavy off-highway machines can pull over 512 horsepower (382 kW). Common displacements cluster around 2.8L, 3.9L, 5.2L, 7.8L, 9.8L, and 15.7L, covering everything from light duty versions in box trucks to massive mining equipment. This range means you can find an Isuzu engine suited to nearly any diesel application.

 

This guide focuses on practical, real-world specs: displacement, power output, torque, aspiration type, and typical applications for key Isuzu diesel families. We’ll cover what matters when choosing or replacing an engine—the numbers that help you match components correctly and keep your equipment running. At fabheavyparts.com, we use these specs daily to source and supply compatible engines, long blocks, short blocks, and rebuild components for excavators, loaders, and trucks. Understanding these specs helps you order the right parts the first time.

Core Isuzu Diesel Engine Families and Specs

Engine Naming Conventions

Isuzu organizes its diesel engines into families that share basic architecture but offer multiple variants. Understanding these families makes it easier to identify what you’re working with and what parts will fit.

 

The naming convention is straightforward once you know the pattern. The number at the start indicates cylinder count—“4” means inline-four, “6” means inline-six. The letters that follow indicate the series and generation. For example:

• 4JB1 = 4-cylinder, J-series, B variant, first generation
• 6HK1 = 6-cylinder, H-series, K variant, first generation
• 6WG1 = 6-cylinder, W-series, G variant, first generation

 

Suffixes like “T” mean turbocharged, “TC” means turbo with intercooling, and “X” or other letters may indicate emissions variants or electronic control upgrades. This system lets mechanics quickly identify architecture, generation, and capabilities from the spec plate—making parts matching simpler when working with suppliers.

 

Turbocharging and Direct Injection

Isuzu diesel engines are available with turbocharging and direct injection systems. Turbocharging uses a turbine driven by exhaust gases to force more air into the engine, increasing power and efficiency. Direct injection delivers fuel directly into the combustion chamber, improving fuel atomization and combustion efficiency for better performance and lower emissions.

 

Major Engine Families

The major families include:

Family	Displacement	Cylinders	Typical HP Range	Common Applications
4JB1	2.8L	4	76–100 hp	Light trucks, compact equipment
4BD1/4BD2	3.9L	4	90–135 hp	NPR trucks, industrial
4JJ1	3.0L	4	130–160 hp	NQR trucks, mini-excavators
4HK1	5.2L	4	150–215 hp	NPR-HD/NQR, generators
6BD1	5.8L	6	150–200 hp	Transitional heavy trucks
6BG1	6.5L	6	160–240 hp	20–30 ton excavators, loaders
6HK1	7.8L	6	240–300+ hp	F-Series trucks, large equipment
6SD1	8.2L	6	Up to 250 hp	Mid-size heavy equipment
6UZ1	9.8L	6	350–525 hp	Heavy trucks, large equipment
6WG1	15.7L	6	450–540 hp	Mining, port equipment, cranes
Numbers given are typical OEM ranges and can vary by model year, calibration, and emissions tier.

Detailed Specs for Popular Isuzu Diesel Models

Isuzu diesel engines range in power from 11.8 to 512 horsepower. Below is a summary table of the most popular Isuzu diesel engines, highlighting their horsepower, displacement, and key features, and many of these applications also use related families such as Isuzu 4JG1 engine configurations in compact equipment:

Engine Model	Displacement	Horsepower (HP)	Key Features / Notes
4JB1	2.8L	76–100	Inline-4, OHV, mechanical direct injection, used in light trucks and compact equipment
4BD1	3.856L	90–100 (NA)	Inline-4, mechanical injection, compression ratio 17.5:1, NPR trucks, industrial use
4BD2	3.9L	120–135 (Turbo)	Inline-4, turbocharged, mechanical injection, NPR trucks, industrial use
4HK1	5.2L	150–215	Inline-4, turbocharged, DOHC, common rail, powers shuttle buses, box trucks, construction machinery; recognized for fuel efficiency and performance in medium-duty commercial trucks
6BD1	5.785L	150–200	Inline-6, mechanical injection, compression ratio 17.5:1, transitional heavy trucks
6BG1T	6.494L	163 (at 2200 rpm)	Inline-6, turbocharged/intercooled, mechanical direct injection, used in excavators, loaders
6HK1X	7.790L	246 (at 2000 rpm)	Inline-6, turbocharged, common rail, used in F-Series trucks, large equipment
6UZ1	9.8L	350–525	Inline-6, electronic control, advanced emissions, heavy trucks, large equipment
6WG1	15.7L	450–540	Inline-6, turbocharged, OHC, mining, port equipment, cranes
Isuzu diesel engines are known for their reliability, durability, and fuel efficiency in commercial and industrial applications. They are widely used in medium-duty commercial trucks (especially the Isuzu NPR and N-Series), as well as in excavators, cranes, forklifts, and other heavy equipment, all of which depend on timely access to industrial parts, tools, and maintenance supplies to stay productive.

 

Isuzu 4JB1 Diesel Engine Specs (2.8L)

The 4JB1 is a 2.8L 4-cylinder diesel that was widely used from the late 1980s through the 1990s in Isuzu Elf light trucks (early ELF/N-Series) and some compact equipment. It represents an era when simplicity and durability were the primary design goals.

 

The engine features direct injection with a mechanical fuel system—no electronics to troubleshoot. Its reputation for reliability and ease of overhaul makes it popular with operators who prefer straightforward maintenance. However, as a pre-emissions design, it’s now limited to off-road or legacy applications in most markets.

 

Key 4JB1 Specifications:

• Displacement: 2,771 cc (2.8L)
• Configuration: Inline-4, OHV
• Bore x Stroke: ~93 mm x 102 mm
• Compression Ratio: Up to 17.5:1 (DI versions)
• Max Power: 76–100 hp (55–74 kW) at 3,500–4,000 rpm
• Max Torque: 170–220 Nm (125–162 lb ft) at 2,000 rpm
• Aspiration: Naturally aspirated or turbocharged
• Fuel System: Mechanical plunger-nozzle injection

 

At Fab Heavy Parts, we often help customers source 4JB1 cylinder heads, pistons, injectors, and gasket kits for older trucks and off-road machines still earning their keep daily.

 

Isuzu 4BD1 / 4BD2 Diesel Engine Specs (3.9L)

The 4BD1/4BD2 series represents 3.9L inline-4 engines used in Isuzu NPR and similar trucks, plus industrial applications from the late 1970s through the 1990s. The naturally aspirated 4BD1 served as the base motor in many applications, while the turbocharged 4BD2 offered more power for heavier loads.

 

These engines use mechanical inline injection pumps and gear-driven timing—designs that handle high-mileage duty cycles without sophisticated electronics. Many contractors still run 4BD-powered equipment daily and rely on Isuzu 4HF1 and similar engine parts as compatible service components in mixed fleets. Risks include liner wear from poor fuel quality, making quality rebuild parts critical for restoring factory performance.

 

Key 4BD1/4BD2 Specifications:

• Displacement: 3,898 cc (3.9L) (4BD1: 3.856L)
• Configuration: Inline-4
• Bore x Stroke: ~102 mm x 118 mm
• Compression Ratio: ~17:1 (4BD1: 17.5:1)
• Max Power (NA): 90–100 hp (66–74 kW)
• Max Power (Turbo): 120–135 hp (89–100 kW) at 3,000–3,200 rpm
• Max Torque: 310–370 Nm (230–270 lb ft)
• Aspiration: Naturally aspirated (4BD1) or turbocharged (4BD2)
• Fuel System: Mechanical inline injection pump

 

Fab Heavy Parts can cross-reference OEM part numbers to supply hard-to-find rebuild components for these workhorses, including guidance on piston replacement costs and procedures.

 

Isuzu 4HK1 Diesel Engine Specs (5.2L)

The 4HK1 is a 5.2L common-rail turbo diesel introduced in the mid-2000s. It powers medium-duty trucks like the Isuzu NPR-HD, NQR, and certain F-Series, as well as construction equipment and generator sets. This engine marked Isuzu’s full transition to modern electronic control in the medium-duty segment.

 

The 4HK1 balances fuel consumption with reliability, gaining 10–15% efficiency over its mechanical predecessors. However, DPF regeneration demands quality low-sulfur fuel and can cause issues in idle-heavy urban cycles. Components like the EGR cooler, injectors, and turbo require attention to maintain claimed max power, and sourcing proven Isuzu 4HK1 replacement parts is essential when those systems start to fail.

 

Key 4HK1 Specifications:

• Displacement: 5,193 cc (5.2L)
• Configuration: Inline-4, DOHC 16-valve engine
• Bore x Stroke: ~115 mm x 110 mm (some variants 115 x 125 mm)
• Compression Ratio: High (suitable for modern low-sulfur diesel)
• Max Power: 150–215 hp (110–160 kW) at 2,500–2,600 rpm
• Max Torque: 452–647 lb ft (612–877 Nm) at 1,600–1,850 rpm
• Aspiration: Turbocharged with charge-air cooling
• Fuel System: High-pressure common rail (up to 1,800 bar)
• Emissions Tech: EGR, DPF, DOC for EPA 2007/2010 or China VI compliance

 

Example application: Isuzu NPR-HD trucks from mid-2000s onward commonly run 175 hp at 2,500 rpm with 452 lb ft at 1,850 rpm, and operators frequently need reliable Isuzu 4HK1 engine parts to keep these trucks in service.

 

Isuzu 6HK1 Diesel Engine Specs (7.8L)

The 6HK1 is a 7.8L inline-6 diesel used in heavier F-Series trucks (FTR, FSR), construction machines, and generators since the late 1990s and early 2000s. It represents the step up from 4-cylinder engines when more power and torque are needed.

 

The engine evolved from mechanical to electronic control over its production run. Early versions used mechanical injection, while later common-rail versions offer precise multi-injection for quieter operation and better fuel economy. Tier 3/4 models feature SCR for NOx control, which means DEF fluid and periodic aftertreatment maintenance.

 

Key 6HK1 Specifications:

• Displacement: 7,790 cc (7.8L)
• Configuration: Inline-6
• Bore x Stroke: ~115 mm x 125 mm
• Max Power: 240–300+ hp (180–225 kW) at 2,100–2,600 rpm (6HK1X: 246 HP at 2000 RPM)
• Max Torque: 700–900+ Nm at 1,400–1,600 rpm
• Aspiration: Turbocharged and aftercooled
• Fuel System: Electronic common rail (later versions)
• Emissions: Tier 3/4 or Euro III–V with EGR, DPF, SCR

 

The 6HK1 delivers strong low-rpm torque that’s ideal for hauling and construction work. Electronic ECUs enable precise calibration, but also require proper diagnostic tools for troubleshooting, just as compact industrial engines like the 4LE2 depend on correctly matched Isuzu 4LE2 overhaul and service parts during rebuilds.

 

Isuzu 6BG1 & 6WG1 Diesel Engine Specs (6.5L & 15.7L)

6BG1 (6.5L):

The 6BG1 is a 6.5L inline-6 widely used in 20–30 ton excavators, wheel loaders, and industrial equipment from the 1980s through the 2000s. The turbocharged/intercooled 6BG1T version dominated the excavator market for years, sitting alongside smaller truck engines such as those using Isuzu 4JA1 engine parts in lighter-duty applications.

 

Key 6BG1T Specifications:

• Displacement: 6,494 cc (6.5L)
• Configuration: Inline-6
• Bore x Stroke: ~105 mm x 125 mm
• Compression Ratio: ~17:1
• Max Power: 120–180 kW (160–240 hp); 163 HP at 2200 RPM (6BG1T)
• Max Torque: 700–850 Nm (optimized for low-end pulling)
• Aspiration: Naturally aspirated or turbo-intercooled (6BG1T)
• Fuel System: Mechanical direct injection

 

6WG1 (15.7L):

The 6WG1 is the big one—a 15.7L inline-6 used in heavy trucks and very large equipment including mining trucks, port cranes, and massive excavators. With outputs exceeding 343 kW (460+ hp) and torque around or above 1,800 Nm, it handles the most demanding applications.

 

Key 6WG1 Specifications:

• Displacement: 15,681 cc (15.7L)
• Configuration: Inline-6, OHC
• Max Power: Up to 397 kW (540 hp) at 1,800 rpm
• Max Torque: 1,800–2,200+ Nm
• Aspiration: Turbocharged with charge-air cooling
• Dry Weight: ~1,150 kg
• Emissions: Tier 3/Stage IIIA (some Tier 4 variants)

 

At Fab Heavy Parts, we serve many customers running 6BG1 and 6WG1 engines in excavators and cranes, supplying a wide range of industrial diesel engine parts and components. Matching the exact engine code and power ratings is critical before ordering major components—variants differ in piston crowns, injector orifices, and emissions configurations.

 

Emissions, Fuel Systems, and Technology Differences

Mechanical Era (Pre-2000s)

Engines like the 4JB1, 4BD1, early 6BD1, and early 6BG1 relied on indirect injection or basic direct injection diesel systems with no electronic control or aftertreatment. These used rotary or VE pumps operating at 200–400 bar. Combustion optimization achieved Tier 0–2 emissions levels, but particulates and NOx were higher by modern standards.

 

Advantages: Simpler to diagnose and repair, no electronics to fail, field-serviceable with basic tools.

Disadvantages: Higher emissions, less fuel-efficient, can’t legally power on-road vehicles in many regions today.

 

Tier 3/Euro Ⅲ Era (2000s)

Engines like the 6HK1 and 6BG1T introduced cooled EGR and electronic timing control. These systems cut NOx by 40–50% compared to earlier designs. High-pressure common rail started appearing, offering better fuel atomization and quieter operation.

 

Emissions Technology Overview

Modern engines like the 4HK1, 6HK1, 6UZ1, and 6WG1 with Tier 4 compliance use multiple technologies:

• DPF (Diesel Particulate Filter): Captures soot and burns it off during regeneration cycles
• SCR (Selective Catalytic Reduction): Uses urea/DEF fluid for 90%+ NOx reduction
• DOC (Diesel Oxidation Catalyst): Reduces carbon monoxide and hydrocarbons
• Higher rail pressures: 1,600–2,000 bar for better fuel atomization

 

These technologies improve fuel economy by 5–10% and dramatically reduce emissions. But they also introduce potential failure points:

• EGR soot clogging (common at 100,000–200,000 miles in stop-and-go trucks)
• Injector wear from ultra-low sulfur fuel abrasives
• Turbo VGT vane sticking
• DPF regeneration issues in idle-heavy applications

 

Real-world data shows 10–20% power loss when these systems are neglected, which is why many fleet managers keep complete engine overhaul kits for compact diesels such as Shibaura on hand to bring performance back within spec.

 

How to Read an Isuzu Engine Data Plate

The engine data plate is your fastest path to accurate parts matching. For Isuzu vehicles and equipment, these plates are typically riveted to the block side, rocker cover, or timing gear case. On excavators, access may require removing undercarriage panels. On trucks, check along the frame rails or valve cover area. Partnering with a specialist like Fab Heavy Parts for OEM-spec replacement components ensures that the numbers you read translate into the correct parts on your order.

 

Typical Data Plate Information:

• Engine Model: e.g., 4HK1-TCN00 (indicates turbo-common-rail NA variant)
• Serial Number: Unique identifier for this specific engine
• Rated Power: Listed in kW and/or hp at a specific rpm
• Max Torque: Nm or lb ft at a specific rpm
• Emission Certification: Tier 3, Tier 4 Final, EPA 2010, China VI, etc.
• Aspiration: NA, T (turbo), TC (turbo-intercooled)
• Additional codes: Fuel setting, injection timing, or variant identifiers

 

For example, a 6BG1T plate might list 175 kW at 2,200 rpm with Tier 2 emissions—information crucial for verifying against OEM catalogs before ordering long blocks.

 

Choosing the Right Isuzu Diesel or Replacement Parts

Selecting the correct Isuzu engine or major component requires matching several factors to your specific application, whether you’re working on legacy platforms built around Isuzu C240 engine assemblies or more modern powerplants. Here’s a practical approach:

 

1. Confirm Engine Family and Full Model

Start with the engine data plate or any remaining casting numbers on the block. Identify the family (4HK1, 6BG1, etc.) and the full model code including any suffix letters.

 

 2. Capture Serial Number and Plate Data

The serial number narrows down production date and variant. Take photos of everything visible.

 

3. Identify Equipment and Year

Know your machine’s make, model, and production year. This helps cross-reference OEM applications and verify that specs match what was installed originally.

 

4. Match Displacement, Aspiration, and Emissions Level

Ensure the replacement matches:

• Displacement (a 5.2L 4HK1 won’t swap directly into a 3.9L 4BD1 application)
• Aspiration type (non turbo vs. turbo vs. turbo-intercooled)
• Emissions tier (Tier 2 vs. Tier 4 affects ECU, wiring, and aftertreatment)

 

Why Cross-Family Swaps Are Risky:

Swapping different Isuzu variants without checking compatibility can create serious problems:

• Bellhousing mismatches (SAE #2 vs. #3)
• Wiring harness incompatibility
• ECU programming differences
• Cooling system capacity mismatch
• 20–30% torque deficits without proper adapters

 

These issues can halve engine lifespan in mismatched applications—or prevent the engine from running at all.

 

Maintenance Impact on Performance and Specs

Factory power ratings assume a well-maintained engine. Real-world performance often falls short if maintenance is neglected.

 

Common Issues That Reduce Power: When these show up on non-Isuzu machines in your fleet, such as Kubota-powered equipment, you’ll follow the same diagnostic logic and usually end up sourcing Kubota D1703 engine repair parts to restore factory power.

• Worn injectors (10–20% power loss): Smoky starts, rough idle
• Clogged EGR (15–25% power loss): Black smoke, sluggish response
• Turbo bearing wear (10–15% power loss): Turbo lag, oil consumption
• Low compression (15–30% power loss): Hard starting, poor fuel economy
• DPF clogging (up to 50% power loss, limp mode): Warning lights, derates

 

A factory 4HK1 rated at 215 hp can easily drop to 175 hp or less with worn injectors, oil-starved turbo bearings, or low cylinder compression (under 350 psi per cylinder from ring glazing).

 

Key Maintenance Intervals for Isuzu Diesels:

• Oil and filter: Every 10,000 miles using CJ-4 rated 15W-40
• Fuel filters: Every 6 months or per manufacturer schedule
• Valve lash: Every 40,000 miles (typical clearance 0.25–0.40 mm intake)
• Coolant flush: Annually to prevent EGR cooler cracks and scale buildup
• Air filters: Per conditions—more frequently in dusty environments
• Turbo inspection: Check for shaft play and oil leaks at regular intervals
• Injector service: Inspect or test at 250,000 miles or when performance drops

 

Older vs. Modern Engine Issues: The same age-related patterns show up across other brands too, so operators often stock critical spares like Kubota D902 engine components alongside their Isuzu inventory to reduce downtime.

 

Older engines like the 4JB1 and 6BG1 tend to suffer coking from extended idling. Cleaning requires walnut blasting or chemical treatment. Liner and ring wear from dusty conditions or poor filtration is another common problem.

 

Modern 4HK1 and 6HK1 engines face different challenges: DPF regeneration cycles that can cause thermal damage if interrupted, EGR passages that clog with soot, and injectors sensitive to fuel quality.

 

Well-maintained Isuzu diesels routinely hit 300,000+ miles or 15,000+ hours before major overhaul. Neglected units in dusty, high-load conditions without proper air filtration might only reach 150,000 miles. Timely replacement of wear parts with quality components from Fab Heavy Parts helps engines stay close to their original factory power output and excellent fuel economy ratings throughout their service life.

FAQ

Q1: Can I swap a different Isuzu engine series into my truck or excavator?

A1: Swaps are possible but complex. Staying within the same family—such as swapping a Tier 2 4HK1 for a Tier 4 version—is generally easier than switching to a different series like 4JJ1 with its dedicated engine parts availability or 6HK1.

Key factors to consider:

• Engine mounts and bellhousing patterns
• ECU and wiring compatibility
• Cooling system capacity
• Emissions certification
• Hydraulic pump drives (if applicable)

 

Q2: Where can I find exact torque and tightening specs for an Isuzu diesel rebuild?

A2: Precise torque figures, clearances, and procedures are detailed in official Isuzu workshop manuals or OEM service data, as values vary by engine variant. For example, 4HK1 main bearing torque specs range from 120 to 140 Nm dry. Rebuilds of engines like the 4HK1, 6HK1, 6BG1, or 6UZ1 require the correct manual for the specific engine code and emission tier. While Fab Heavy Parts doesn’t provide full manuals, we assist in matching rebuild kits and components to ensure your manual data applies correctly and in pointing you to the right heavy-equipment parts and maintenance accessories for your specific engine and application.

 

Q3: How do I tell if my Isuzu diesel is Tier 2, Tier 3, or Tier 4?

A3: Check the emissions info on the engine data plate—it usually shows the EPA or EU standard: Tier 3, Tier 4i, Tier 4 Final, Euro III, Euro IV, etc.

If unclear, look for these signs:

• Pre-Tier/Tier 1–2: Mechanical injection pump, no EGR or DPF
• Tier 3/Euro III: Electronic common rail injection, visible EGR cooler, possible oxidation catalyst
• Tier 4/Euro IV–V: Common rail, large DPF canister, SCR system with DEF tank, complex wiring

For certainty, send a photo of the plate and engine to fabheavyparts.com before ordering parts, especially if you’re maintaining mixed fleets that also include Yanmar 3T84-powered equipment alongside your Isuzu units.

 

Q4: What's the typical life expectancy of an Isuzu diesel engine?

A4: Many well-maintained Isuzu diesel engines in trucks and equipment can exceed 300,000 miles or 10,000 hours before major overhaul. Proper care, including quality oil, clean fuel, cooling system upkeep, and timely filter changes, extends engine life. Conversely, heavy stop-and-go driving, dusty conditions, high loads without maintenance, and poor fuel quality shorten lifespan.

 

Q5: How do I match parts when my engine tag is missing or unreadable?

A5: This is common, especially with older equipment that has changed hands or seen tough use.

Start with what you have:

• Equipment make, model, and serial number
• Any engine casting numbers (block, head, or oil pan)
• Photos from multiple angles
• Key measurements (pistons, liners, heads)
• Application details (year, horsepower, past performance)

Don’t guess—contact us with your info to confirm the right engine spec before ordering parts or to source application-specific Isuzu 3KC1 engine components when you’re working on compact industrial equipment.

 

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