10PCS Cylinder Head Bolt 3920780 Fits for Cummins Engine 4B 6B 6B5.9 6BTA5.9-G3 4B3.9 B5.9-C177
10PCS Cylinder Head Bolt 3920780 Fits for Cummins Engine 4B 6B 6B5.9 6BTA5.9-G3 4B3.9 B5.9-C177 is backordered and will ship as soon as it is back in stock.
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Powering 10,000+ Commercial Fleets
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One Year Warranty
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Easy 60-day Return
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No Hidden Charges Upon Arrival
Compatibility Information
| Make | Fits New Holland, Fits CASE, Fits Cummins, Fits Dodge |
|---|---|
| Model | 1800, 6500, 750K, 850K, 750H, 621, 550, 2500, 3185, 650 |
Description
Description
Cylinder Head Bolt 3920780 – Premium Replacement for Cummins Engines and Compatible Equipment
High-performance aftermarket cylinder head bolts engineered for reliable engine assembly integrity in Cummins B-series diesel engines and a wide range of CASE, New Holland, and Dodge applications. Precision-manufactured for drop-in compatibility and consistent clamping performance in demanding agricultural, construction, and on-highway environments.
Technical Specifications
Fits Part Numbers: M3920780, SCR9341, 3901220, 3903939, 3918472, 3920780, J920780, J903939
Condition: New, aftermarket replacement
Function: Cylinder head bolt for engine head gasket sealing and structural integrity
Verified Equipment Compatibility
Fits Cummins Engines:
- 4B, 4B3.9, 3.9L
- 6B, 6B5.9, 5.9L, 6.7L
- 6BTA5.9-G3, B5.9-C177, ISB
Fits Dodge Pickup Trucks:
- 2500, 3500
Fits CASE Tractor Loaders (selected models):
- 550, 580E, 580K, 580SE, 621, 650, 650G, 650H, 650K, 680L, 688
- 750H, 750K, 780C, 780D, 850D, 850E, 850G, 850H, 850K, 855D, 855E, 880D
- 888, 1085B, 1085C, 1086B, 1088, 1150E, 1150G, 1150H, 1155E
- 1620, 1640, 1644, 1800, 1822, 1840, 1844, 1845C, 1896
- 2022, 2044, 2096, 2144, 2344, 3150, 3185, 3210
- 4390, 4390T, 4391, 4391T, 4391TA, 5120, 5130, 5140, 5150
- 5220, 5230, 5240, 5250, 6000, 6500, 6590, 6590T, 6590TA, 6591T, 6591TA
- 8820, 8825, 8825HP, 8830, 8840, 8850, 8860, 8860HP, 8870, 8880, 8880HP
- 40XT, 60XT, 70XT, 75XT, 85XT, 90XT, 95XT
- 450C, 455C, 480E, 480E LL, 550E, 550G
- MX100, MX110, MX120, MX135, MX150, MX170
- RP65, RP85, RP110, RP135, RP165, RPZ65, RPZ85, RPZ125, RPZ145
- SPX3150, SPX3185, SPX3200, SPX3200B, SPX3310
- W11B, W14B, W14C
Fits New Holland Tractor Loaders:
- U80, LV80
Why Choose This Cylinder Head Bolt Set
The cylinder head bolts are critical fasteners in your engine assembly, clamping the head gasket between the cylinder head and engine block to maintain combustion pressure and coolant sealing. Worn, stretched, or damaged head bolts can lead to head gasket failure and costly engine damage. This replacement set delivers:
- Reliable clamping force – Correct torque specifications for proper head gasket sealing and combustion integrity
- Exact-fit installation – Direct replacement with correct thread pitch, length, and grade specifications for Cummins B-series engines
- Durable construction – Built to withstand continuous thermal cycling and high combustion pressures in heavy-duty diesel engine environments
- Cost-effective solution – Premium aftermarket quality at a fraction of dealer pricing
Package Contents
10 × Cylinder Head Bolt (3920780)
Essential for engine rebuild, head gasket replacement, and major engine service. Keep your Cummins 4B, 6B, and ISB engines properly assembled and sealed for reliable performance across every application.
1 Year Warranty
1 Year Warranty
Fab Heavy Parts is excited to offer a 12-month warranty on all new replacement/aftermarket parts starting from your original purchase date.
Enjoy peace of mind with Fab Heavy Parts!
For more warranty details, please check out our warranty policy.
Fast Delivery
Fast Delivery
Estimated delivery time 3-6 workdays
No Core Charge
No Core Charge
We don't have a core charge for any products.
The Right Part, the First Time
Engine and hydraulic parts matched by part number, trusted by fleets, contractors and repair shops worldwide.
50,000+
Customers including fleets, workshops and machinery owners
100K+
Parts in stock and ready to ship
65+
Countries served worldwide
Since 2019
Supplying heavy equipment parts to the trade
Frequently Asked Questions
What is your return policy?
We accept returns within 60 days of delivery for unused parts in original packaging. To initiate a return, please submit your request through our return portal. Return shipping costs for non-defective items are the buyer's responsibility.
Can I cancel my order?
You may request a cancellation before your order has been dispatched. Once an order has been fulfilled and shipped, it cannot be cancelled — standard return terms will apply instead. Please contact us as soon as possible if you need to cancel.
What payment methods do you accept?
We accept all major credit and debit cards including Visa, Mastercard, and American Express. We also support PayPal, Apple Pay, and Google Pay at checkout. For B2B and trade customers, bank transfer and net payment terms may be available upon account approval — please contact us to discuss your requirements.
How long will delivery take?
Estimated delivery timeframes are displayed on most product pages and all tool listings. For parts without a displayed timeframe, standard delivery to US addresses is typically 5–10 business days from dispatch, depending on your location and the origin warehouse. Express shipping options may be available at checkout.
Will I be charged import tax or customs duties?
No. US customers are not charged any import fees or customs duties on their orders. The price you see is what you pay — there are no hidden charges added upon delivery.
How do I find out the shipping cost for my order?
You can get an estimated shipping cost directly on the cart page — just add your parts to the cart and enter your delivery zip code to see available shipping options and rates. For large or heavy orders requiring a freight quote, please contact us directly with your parts list and delivery zip code.
Do you offer trade accounts for US buyers?
Yes. US trade customers can apply for a B2B account to access volume pricing, bulk quotation, team invite and dedicated account support. Contact us directly to get started.
