Yanmar 3TNV88C, 4TNV88C & 4TNV98CT Common-Rail Injector Gasket | Yanmar 129978-11871 New
This is the genuine Yanmar 129978-11871 injector gasket.
Yanmar’s parts lists show it with the common-rail injectors: 3 per engine on the 3TNV88C-KKEV and 4 per engine on the 4TNV88C-DHKS (injector 129A00-53100) and the 4TNV98CT-NEN (injector 129E01-53100). That is one gasket per injector.
Order one per injector you replace. A full set of 4 injectors takes 4 gaskets.
Confirm Fitment Before You Order
The Yanmar lists we hold cover the 3TNV88C-KKEV, 4TNV88C-DHKS and 4TNV98CT-NEN. For any other build, send us the engine model and serial number. Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | 129978-11871 |
| Brand | Yanmar |
| Condition | New, genuine, in original packaging |
| Warranty | Manufacturer’s own warranty applies. Call us and we handle the claim. |
| Type | Injector gasket |
| Engines | Yanmar 3TNV88C-KKEV, 4TNV88C-DHKS, 4TNV98CT-NEN (common rail) |
| For injectors | Yanmar 129A00-53100, 129E01-53100 |
| Quantity | One per injector |
| Shipping weight | 0.1 lb |
Fits / Applications
- Yanmar 3TNV88C-KKEV: 3 per engine
- Yanmar 4TNV88C-DHKS with injector 129A00-53100: 4 per engine
- Yanmar 4TNV98CT-NEN with injector 129E01-53100: 4 per engine
Follow the workshop manual for your engine when you fit this part.
Part Numbers & Cross Reference
Yanmar 129978-11871
Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.
Frequently Asked Questions
How many do I need?
One per injector: 3 on the 3TNV88C and 4 on the 4TNV88C and 4TNV98CT, as Yanmar lists them.
Will it fit my engine?
Call 530-668-0818 with your engine model and serial number and we will confirm it.
Related Parts
- Yanmar 129A00-53100 New Common-Rail Injector | 3TNV88C & 4TNV88C
- Yanmar 129A00-53100 New Common-Rail Injector Set of 4 | 3TNV88C & 4TNV88C
- Yanmar 4TNV98CT 3.3L Common-Rail Fuel Injector | Bosch 0445110508 New (Yanmar 129E01-53100)
Why Buy From Valley Fuel Injection
We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. Call us with your engine serial, VIN or build date before you order and we will help you confirm fitment, so the right part arrives the first time.
UPS to all 50 states, including Alaska and Hawaii. Your rate shows at checkout. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax is additional; shipping is calculated at checkout. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
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