Air Heater Gasket – Fits Yanmar 3TNE/3TNV/4JH Series (Replaces 129150-77511)
Air Heater Gasket – Fits Yanmar 3TNE/3TNV/4JH Series (Replaces 129150-77511) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Air Heater Gasket – Fits Yanmar 3TNE/3TNV/4JH Series (Replaces 1291...
Product Details
This high-quality aftermarket Air Heater Gasket is designed to create a reliable seal for the air heater assembly on a wide range of Yanmar industrial and marine diesel engines. It is compatible with multiple models in the 3TNE, 3TNV, and 4JH series, including the popular 3TNE84, 3TNE88, 3TNV88, 4JH2E, and 4JH3E engines.
This part serves as a direct replacement for Yanmar part numbers 129150-77511 and the superseded 129470-77590, ensuring OEM-level fit and function.
- Installation Method: Direct replacement
- Material: Durable non-asbestos gasket material
- Package Contents: 1 x Air Heater Gasket
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yanmar | 129150-77511 | Primary Replacement |
| Yanmar | 129470-77590 | Superseded by 129150-77511 |
Engine & Model Compatibility
Confirm your engine model in the table below. While extensive, this list may not cover all compatible models.
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Yanmar | 3TNE84 | 4-Stroke | 129150-77511 |
| Yanmar | 3TNE88 | 4-Stroke | 129150-77511 |
| Yanmar | 3TNV84T | 4-Stroke | 129150-77511 |
| Yanmar | 3TNV88 | 4-Stroke | 129150-77511 |
| Yanmar | 3TNV88FSY | 4-Stroke | 129150-77511 |
| Yanmar | 4TNE88 | 4-Stroke | 129150-77511 |
| Yanmar | 4TNE94 | 4-Stroke | 129150-77511 |
| Yanmar | 4TNE98 | 4-Stroke | 129150-77511 |
| Yanmar | 4TNE106 | 4-Stroke | 129150-77511 |
| Yanmar | 4TNV88 | 4-Stroke | 129150-77511 |
| Yanmar | 4TNV94L | 4-Stroke | 129150-77511 |
| Yanmar | 4TNV98 | 4-Stroke | 129150-77511 |
| Yanmar | 4TNV98T | 4-Stroke | 129150-77511 |
| Yanmar | 4TNV106 | 4-Stroke | 129150-77511 |
| Yanmar | 4TNV106T | 4-Stroke | 129150-77511 |
| Yanmar | 3JH3 | 4-Stroke | 129150-77511 |
| Yanmar | 3JH4 | 4-Stroke | 129150-77511 |
| Yanmar | 3JH5 | 4-Stroke | 129150-77511 |
| Yanmar | 3JH5E | 4-Stroke | 129150-77511 |
| Yanmar | 3JH5AE | 4-Stroke | 129150-77511 |
| Yanmar | 4JH2E | 4-Stroke | 129150-77511 |
| Yanmar | 4JH3-DT | 4-Stroke | 129150-77511 |
| Yanmar | 4JH3-DTE | 4-Stroke | 129150-77511 |
| Yanmar | 4JH3-HTE | 4-Stroke | 129150-77511 |
| Yanmar | 4JH3-TE | 4-Stroke | 129150-77511 |
| Yanmar | 4JH3E | 4-Stroke | 129150-77511 |
| Yanmar | 4JH3ZA | 4-Stroke | 129150-77511 |
| Yanmar | 4JH4-DTE | 4-Stroke | 129150-77511 |
| Yanmar | 4JH4-HTE | 4-Stroke | 129150-77511 |
| Yanmar | 4JH4-HTE1 | 4-Stroke | 129150-77511 |
| Yanmar | 4JH4-TE | 4-Stroke | 129150-77511 |
| Yanmar | 4JH4AE | 4-Stroke | 129150-77511 |
| Yanmar | 4JH4E | 4-Stroke | 129150-77511 |
| Yanmar | 4JH45 | 4-Stroke | 129150-77511 |
| Yanmar | 4JH5E | 4-Stroke | 129150-77511 |
| Yanmar | 4JH57 | 4-Stroke | 129150-77511 |
| Yanmar | 4JH80 | 4-Stroke | 129150-77511 |
| Yanmar | 4JH110 | 4-Stroke | 129150-77511 |
| Yanmar | 4LH-DTE | 4-Stroke | 129150-77511 |
| Yanmar | 4LHA-DTP | 4-Stroke | 129150-77511 |
| Yanmar | 4LHA-HTP | 4-Stroke | 129150-77511 |
| Yanmar | 4LHA-STE | 4-Stroke | 129150-77511 |
| Yanmar | 4LHA-STP | 4-Stroke | 129150-77511 |
Technical Specs
- Product Type
- Air Heater Gasket
- Fuel Type
- Diesel
- Housing Material
- Non-asbestos gasket material
- Installation
- Direct replacement
- Dimensions
- 0.1" H x 8.0" W x 8.0" L
- Other Technical Attributes
- OEM-specified gasket for air heater assembly
What’s in the Box
- 1 x Air Heater Gasket (129150-77511)
Installation Notes
- Ensure the engine is completely cool and disconnect the battery as a safety precaution.
- Locate the air heater assembly on the engine and carefully remove any connected components.
- Unbolt and remove the air heater. Note the orientation of the existing gasket.
- Thoroughly clean both mating surfaces of any old gasket material, sealant, or corrosion. A plastic scraper and a suitable solvent are recommended.
- Position the new gasket, ensuring all bolt holes align perfectly.
- Reinstall the air heater assembly, hand-tightening bolts first, then torquing them to the manufacturer's specification in a star or crisscross pattern.
- Reconnect all ancillary components and the battery, then start the engine and check for any air leaks.
Troubleshooting & FAQ
How do I confirm this gasket fits my specific Yanmar engine?
The most reliable method is to match your engine model to the compatibility list provided. Additionally, cross-reference the part number (129150-77511 or the superseded 129470-77590) with your engine's service manual or existing part. If in doubt, visually compare your old gasket to the product images.
What are common signs of a failed air heater gasket?
Symptoms of a leaking gasket include audible hissing or whistling sounds from the engine intake area, a rough idle, reduced engine performance, or visible soot/exhaust marks around the air heater assembly connection point. Failure to heat the intake air in cold weather can also point to a leak.
Can I reuse my old gasket?
No. Gaskets are single-use components designed to crush and conform to create a seal. Once compressed, they will not provide a reliable seal if reinstalled. Always use a new gasket when servicing the air heater.
Is any sealant required during installation?
Typically, this type of gasket is designed to be installed dry. Applying sealant can interfere with its ability to seal properly and may not be recommended by the engine manufacturer. Always consult your Yanmar service manual for specific instructions.
How often should this gasket be replaced?
This gasket does not have a set replacement interval. It should be replaced whenever the air heater is removed for service or if any signs of a leak are detected.
What is the difference between this aftermarket and an OEM part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and dimensional tolerances. We ensure our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.
What are your shipping speed and costs?
We ship worldwide quickly—typical transit is 5–15 days for most regions. Standard shipping is free, and any available expedited options will be presented at checkout.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against your original part before purchase. If anything differs—even if your model appears compatible—do not order.
- This is an aftermarket replacement part, not an original equipment manufacturer (OEM) component.
- Professional installation is highly recommended for safety, proper function, and to prevent engine damage.
About Sea Sierra
- Pro-Grade Standards: We supply marine parts engineered to meet or exceed OEM-level tolerances and are rigorously tested for real-world performance and durability.
- Fast Global Fulfillment: With our direct-to-you model, we offer free standard delivery to most regions, typically arriving in 5–15 days.
- Manufacturer-Direct Value: By eliminating middlemen, we deliver professional-grade quality and rigorous quality control at a fair price.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
