Oil Pump Tube Gasket – Fits Yanmar 3JH & 4LH Series (Replaces 129470-35040)
Oil Pump Tube Gasket – Fits Yanmar 3JH & 4LH Series (Replaces 129470-35040) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Oil Pump Tube Gasket – Fits Yanmar 3JH & 4LH Series (Replaces 1...
Product Details
This aftermarket Oil Pump Tube Gasket – Fits Yanmar 3JH & 4LH Series (Replaces 129470-35040) provides a reliable seal for the oil pump tube on various Yanmar Marine Diesel engines, including the 3JH2, 3JH3, 4LH, and 4LHA series. It is engineered to meet OEM specifications for fit and function, preventing oil leaks and ensuring proper lubrication system performance.
This part is a direct replacement for Yanmar OEM part number 129470-35040.
- Ensures a reliable, leak-free seal between the oil pump tube and the engine block.
- Installs directly onto the engine oil pump assembly.
- Designed for marine diesel engine environments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 129470-35040 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for a range of Yanmar marine diesel engines. Please verify your specific model is listed.
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Yanmar | 3JH2, 3JH2-TCE, 3JH2E, 3JH2L | 4-Stroke | 129470-35040 |
| Yanmar | 3JH3, 3JH3E-YEU-E | 4-Stroke | 129470-35040 |
| Yanmar | 4LH-TE, -HTE, -DTE, -STE, -HT, -HTZ, -HTZAY, -DTZ, -UT, -UTZAY, -UT2 | 4-Stroke | 129470-35040 |
| Yanmar | 4LH-ST, -STZAY, -STZ, -WST, -WSTZY | 4-Stroke | 129470-35040 |
| Yanmar | 4LHA-STE, -STP | 4-Stroke | 129470-35040 |
| Yanmar | 4LHS-STZE, -STZP, -DTE, -DTP, -DTZE, -DTZP, -HTE, -HTP, -HTZE, -HTZP | 4-Stroke | 129470-35040 |
Technical Specs
- Product Type
- Oil Pump Tube Gasket
- Installation
- Engine Oil Pump
- Dimensions
- Height: 1 mm (0.1 cm), Width: 30 mm (3.0 cm), Length: 45 mm (4.5 cm)
- Weight
- ~0.0 kg (negligible weight)
- Other Technical Attributes
- Ensures reliable seal between oil pump tube and engine block
What’s in the Box
- 1 x Oil Pump Tube Gasket (129470-35040)
Installation Notes
- Ensure the engine is cool and disconnect the battery. Drain the engine oil completely into a suitable container.
- Locate and access the oil pump tube. This may require removing other components for clearance.
- Carefully remove any fasteners securing the oil pump tube to the engine block.
- Remove the old gasket. Thoroughly clean both mating surfaces of any old gasket material, sealant, or corrosion.
- Position the new gasket correctly onto the mounting surface.
- Reinstall the oil pump tube and tighten the fasteners to the manufacturer's recommended torque specifications.
- Refill the engine with new oil to the specified level.
- Reconnect the battery, start the engine, and carefully inspect the gasket area for any signs of oil leaks.
Troubleshooting & FAQ
How can I confirm this gasket fits my specific Yanmar engine?
Check your engine model against the compatible models listed in the "Engine & Model Compatibility" table. It is crucial to match your engine's model number (e.g., 3JH3, 4LH-STE) to ensure a correct fit.
What are the signs of a failed oil pump tube gasket?
The most common sign is an active oil leak from the area where the oil pump tube meets the engine block. This can lead to low oil pressure, oil stains in the bilge, and potential engine damage if left unaddressed.
Is this a direct replacement for Yanmar part 129470-35040?
Yes, this is an aftermarket part designed as a direct, dimensionally-accurate replacement for the OEM Yanmar part 129470-35040.
When should this gasket be replaced?
This gasket does not have a fixed replacement interval. It should be replaced whenever you service the oil pump, if you notice any leaks from the gasket area, or during a major engine overhaul.
Do I need to use sealant with this gasket?
Typically, this type of gasket is designed to be installed dry. However, always consult your engine's official service manual for specific procedures and recommendations regarding the use of sealants.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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