Shaft Assemly 421-20-34511 4212034511 421-20-34650 4212034650 for Komatsu Loader WA450 WA470 WA480
Shaft Assemly 421-20-34511 4212034511 421-20-34650 4212034650 for Komatsu Loader WA450 WA470 WA480 is backordered and will ship as soon as it is back in stock.
-
Powering 10,000+ Commercial Fleets
-
One Year Warranty
-
Easy 60-day Return
-
No Hidden Charges Upon Arrival
Compatibility Information
Description
Description
Shaft Assemly 421-20-34511 4212034511 421-20-34650 4212034650 for Komatsu Loader WA450 WA470 WA480
Compatible Part Numbers
- 421-20-34511
- 4212034511
- 42120-34511
- 421-20-34650
- 4212034650
- 42120-34650
Compatible Equipment
- Komatsu Loaders: WA450, WA470, WA480
- Komatsu Bulldozers: D65EX, D65PX, D65WX
This shaft assembly is designed for use with Komatsu loaders WA450, WA470, and WA480, as well as Komatsu bulldozers D65EX, D65PX, and D65WX. It serves as a critical component for the drive shaft or universal joint connections, ensuring reliable power transmission within the vehicle's drivetrain system. The part numbers listed correspond to specific universal joint and propeller shaft assemblies compatible with various serial number ranges and model variants.
For the D65EX, D65PX, and D65WX bulldozer models, the universal joint with part number 421-20-34511 fits serial numbers 80001 and above, including versions without 3D machine control and different special configurations such as overseas and landfill specifications. This part also applies to the D65PX-17 and D65EX-17 models with serial numbers starting at 1001 and later.
Regarding Komatsu wheel loaders, the shaft assembly functions as the rear drive shaft or propeller shaft, depending on the model and region. For example, the WA480-6 loader with serial numbers 90216 and above uses part number 421-20-34511 for the rear propeller shaft, applicable across European Union and North American markets. The WA450 and WA470 series loaders also use this part for various model years and serial number ranges, including eco tier 3 versions and overseas variants.
Some specific compatible loader configurations include:
- WA450-5L from serial number A36001 and up
- WA450-6 (eco tier 3) for North America from serial number 66001 and up
- WA450-6-W1 from serial number A44001 and up
- WA470-6 (eco tier 3) from serial numbers 85001 to 90215
- WA470-5 from serial number 70001 and up (overseas and general versions)
- WA470-5 from serial number WA470-5H50051 and up for universal joint application
- WA470-6 from serial numbers H50051 to H50879 and H52001 and up
- WA480-6 (eco tier 3) from serial number 85001 to 90215, including European Union and North America versions
- WA480-5L from serial number A37001 and up
- WA480-6 LC from serial number H60470 and up
This part is essential for maintaining drivetrain integrity and smooth operation in heavy-duty construction and earthmoving equipment. It replaces a range of universal joints and drive shafts to match the original equipment specifications, supporting various model years and configurations.
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.
