Port Piston Kit - Fits Mercury 135/150 HP 2.0L V6 Outboards (Replaces 765-7442T32/7442A32)
Port Piston Kit - Fits Mercury 135/150 HP 2.0L V6 Outboards (Replaces 765-7442T32/7442A32) is backordered and will ship as soon as it is back in stock.
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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
Port Piston Kit - Fits Mercury 135/150 HP 2.0L V6 Outboards (Replac...
Product Details
This is a replacement Port Piston Kit - Fits Mercury 135/150 HP 2.0L V6 Outboards (Replaces 765-7442T32/7442A32). It is designed for Mercury Marine 2.0L V6 engines, including 105 Jet, 135, 140 Jet, and 150 HP loop-charged models manufactured between 1979 and 2000.
This assembly serves as a direct interchange for Mercury OEM part numbers 765-7442T32 and 7442A32, as well as aftermarket equivalents like 100-30PK and Pro Marine 4000PV.
- Installation Side: Port
- Bore: Standard 3.125-inch
- Kit Includes: Piston, rings, and wrist pin
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 765-7442T32 |
| Mercury | 7442A32 |
| Aftermarket | 100-30PK |
| Pro Marine | 4000PV |
| SEI | 700-14115 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury Marine engines, please verify your model, horsepower, and serial number range to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury Marine | V-105 Jet | 105 | 2-Stroke | Up to 0G760299 | 765-7442T32 | 6-Cylinder |
| Mercury Marine | V-135 | 135 | 2-Stroke | 0C239553–0T178499 | 765-7442T32 | 6-Cylinder |
| Mercury Marine | V-135 | 135 | 2-Stroke | 0C239553–0T178499 | 765-7442T32 | With Rod No. 644-818141 |
| Mercury Marine | V-140 (International) | 140 | 2-Stroke | 0T178500–1B226999 | 765-7442T32 | 6-Cylinder |
| Mercury Marine | V-140 Jet | 140 | 2-Stroke | 0G960500–0T178499 | 765-7442T32 | 6-Cylinder |
| Mercury Marine | V-150 | 150 | 2-Stroke | 0G960500–1B226999 | 765-7442T32 | 6-Cylinder |
Technical Specs
- Product Type
- Piston Assembly
- Installation
- Port Side
- Bore Size
- 3.125 inches (79.375 mm)
- Weight
- 1.19 lbs (0.54 kg)
- Package Dimensions
- 15.5 × 9.5 × 8.5 inches
- Fitment
- Port Side Piston
- Includes
- Piston, Rings, Wrist Pin
- OEM Part Number
- 765-7442T32
What’s in the Box
- 1 x Piston Assembly (765-7442T32)
- 1 x Ring Set
- 1 x Wrist Pin
Installation Notes
- Disconnect the battery and all fuel lines for safety.
- Drain the engine coolant and oil completely.
- Remove the cylinder head, cover, and old gasket.
- Carefully remove the old piston and connecting rod assembly from the cylinder.
- Thoroughly clean the cylinder walls and inspect for any scoring or damage.
- Install the new piston onto the connecting rod using the new wrist pin and securing clips.
- Correctly orient the piston for the port side and compress the new rings using a ring compressor tool.
- Generously lubricate the cylinder, piston, and rings before carefully guiding the assembly into the cylinder.
- Reassemble the engine components, using new gaskets and torquing all bolts to the manufacturer's specifications.
Troubleshooting & FAQ
Is this piston for the port or starboard side?
This piston assembly, cross-referencing part 765-7442T32, is specifically designed for the port side of the engine. A different part number is required for the starboard side.
Is this a standard or oversized piston?
This is a standard bore size piston at 3.125 inches. If your engine cylinders have been bored or honed, you may require an oversized piston and rings.
What are common symptoms of a failed piston?
Signs of piston failure include significant loss of compression, increased oil consumption, blue or white smoke from the exhaust, and a distinct knocking or rattling sound from the engine block.
Does this kit include everything needed for one piston replacement?
Yes, this kit includes one piston, one complete set of rings for that piston, and one wrist pin. These are the essential components for servicing a single cylinder.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it is batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit is 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.
Payment & Security
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