Valve Bypass 129-8034 1298034 Fits for Caterpillar CAT Excavator 312B 311B 317B 329B 336CD 330B 385C 345B 365C 390D 325D Logger 322C Loader 559C 539
Valve Bypass 129-8034 1298034 Fits for Caterpillar CAT Excavator 312B 311B 317B 329B 336CD 330B 385C 345B 365C 390D 325D Logger 322C Loader 559C 539 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
Description
Description
Valve Bypass 129-8034 1298034 Fits for Caterpillar CAT Excavator 312B 311B 317B 329B 336CD 330B 385C 345B 365C 390D 325D Logger 322C Loader 559C 539
- Part number: 129-8034, 1298034
- Condition: new, aftermarket
- Compatible equipment models:
- EXCAVATOR 311B 312B 312B L 315B L 317B LN 318B 320B 320B L 320C 320C FM 320C L 320D 320D FM 320D GC 320D L 320D LN 320D2 320D2 GC 320D2 L 321B 322B L 322B LN 322C 322C FM 323D L 323D LN 323D SA 323D2 L 324D 324D FM 324D FM LL 324D L 324D LN 325B 325B L 325C 325C FM 325D 325D FM 325D FM LL 325D L 325D MH 326D L 329D 329D L 329D LN 330B L 330C 330C FM 330C L 330C MH 330D 330D FM 330D L 330D LN 330D MH 336D 336D L 336D LN 336D2 336D2 L 340D L 340D2 L 345B 345B II 345B II MH 345B L 365B 365B II 365B L 365C 365C L 365C L MH 374D L 385B 385C 385C FS 385C L 385C L MH 390D 390D L M325D L MH M325D MH, FRONT SHOVEL 385C 5090B, KNUCKLEBOOM LOADER 2384C 2484C 539 559C 579C, LOGGER 322C, MOBILE HYD POWER UNIT 323D L 323D LN 324D LN 325C 325D 329D L 330C 330D 330D L 336D L 365C L 385C 385C L, WHEELED EXCAVATOR M325B M325C MH M330D W330B W345B II Fits for Caterpillar
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.
