Water Pump Pulley – Fits MerCruiser/Volvo Penta V6 & V8 Engines (Replaces 8M0153706, 807729T)
Water Pump Pulley – Fits MerCruiser/Volvo Penta V6 & V8 Engines (Replaces 8M0153706, 807729T) is backordered and will ship as soon as it is back in stock.
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Water Pump Pulley – Fits MerCruiser/Volvo Penta V6 & V8 Engines...
Water Pump Pulley – Fits MerCruiser/Volvo Penta V6 & V8 Engines (Replaces 8M0153706, 807729T) is backordered and will ship as soon as it is back in stock.
Product Details
This replacement Water Pump Pulley – Fits MerCruiser/Volvo Penta V6 & V8 Engines is designed for MerCruiser 4.3L to 8.2L V6 and V8 engines manufactured between 1996 and 2014 with serpentine belt systems. It is also compatible with various Volvo Penta V6 and V8 engines that use the corresponding OEM cross-reference numbers.
This component is a direct interchange for Mercury/MerCruiser part numbers 8M0153706, 807729T, and 8M0192199, as well as Volvo Penta numbers 807729 and 807729T.
- Engineered for serpentine belt drive systems.
- Application is for standard cooling systems only.
- Constructed from durable metal for longevity.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/MerCruiser | 8M0153706 |
| Mercury/MerCruiser | 807729T |
| Mercury/MerCruiser | 8M0192199 |
| Volvo Penta | 807729 |
| Volvo Penta | 807729T |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For MerCruiser models, this pulley is compatible with a wide range of V6 and V8 engines from 1996–2014 equipped with a serpentine belt.
For Volvo Penta, compatibility is based on matching the OEM part number 807729 or 807729T, as specific model data varies.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | 4.3LX (GEN+) | Various | 4-Stroke | 1996–2014 | 8M0153706/807729T | For serpentine belt systems only |
| MerCruiser | 4.3LXH (GEN+) | Various | 4-Stroke | 1996–2014 | 8M0153706/807729T | For serpentine belt systems only |
| MerCruiser | 5.0L | Various | 4-Stroke | 1996–2014 | 8M0153706/807729T | For serpentine belt systems only |
| MerCruiser | 5.7L | Various | 4-Stroke | 1996–2014 | 8M0153706/807729T | For serpentine belt systems only |
| MerCruiser | 6.2L | Various | 4-Stroke | 1996–2014 | 8M0153706/807729T | For serpentine belt systems only |
| MerCruiser | 7.4L | Various | 4-Stroke | 1996–2014 | 8M0153706/807729T | For serpentine belt systems only |
| MerCruiser | 8.2L MPI | Various | 4-Stroke | 1996–2014 | 8M0153706/807729T | For serpentine belt systems only |
| MerCruiser | 350 MAG MPI DTS | Various | 4-Stroke | 1996–2014 | 8M0153706/807729T | For serpentine belt systems only |
| MerCruiser | 4.3L Alpha 4V EST | Various | 4-Stroke | Various | 8M0153706 | Serial No. 1G417302-1G499999 |
| Volvo Penta | Various V6/V8 models | Various | 4-Stroke | Various | 807729/807729T | Compatible with the Volvo cross-reference numbers |
Technical Specs
- Product Type
- Water Pump Pulley
- Material
- Metal
- Installation
- Serpentine belt system
- Diameter
- 150 mm (5.9 in)
- Weight
- 0.62 kg (1.36 lbs)
- Dimensions
- Length: 203 mm (8.00 in), Width: 190.5 mm (7.50 in), Height: 193.5 mm (7.62 in)
- Application
- Standard cooling systems only
- Compatible With
- Serpentine belt drive systems
What’s in the Box
- 1 x Water Pump Pulley (8M0153706/807729T/8M0192199)
Installation Notes
- Disconnect the negative battery terminal to prevent accidental starts.
- Locate the serpentine belt tensioner and use a breaker bar or tensioner tool to release the tension, then slip the belt off the water pump pulley.
- Remove the bolts securing the old pulley to the water pump flange. You may need to hold the pulley stationary to prevent it from turning.
- Carefully remove the old pulley. Clean the mounting surface of the water pump flange to ensure a flush fit for the new part.
- Position the new pulley onto the flange, aligning the bolt holes.
- Thread the bolts by hand to prevent cross-threading, then tighten them in a star pattern to the manufacturer's recommended torque specifications.
- Reinstall the serpentine belt, ensuring it is correctly routed on all pulleys. Release the tensioner.
- Reconnect the battery terminal. Start the engine and visually inspect the pulley for smooth, wobble-free operation.
Troubleshooting & FAQ
Will this pulley fit my engine?
This pulley fits most MerCruiser 4.3L–8.2L V6/V8 engines (1996–2014) with serpentine belts and Volvo Penta V6/V8 models using part numbers 807729 or 807729T. Always verify your part number and engine details against our compatibility table to ensure proper fitment.
What are the signs of a failing water pump pulley?
Common signs include a persistent squealing or grinding noise from the engine bay, visible wobble or cracks in the pulley, and potential engine overheating if the water pump's performance is compromised.
Is this pulley for a V-belt or serpentine system?
This pulley is designed specifically for serpentine belt systems. It is not compatible with older V-belt configurations.
How does this differ from the original OEM part?
While it performs identically to an OEM part, our aftermarket pulley is a cost-effective alternative. It is manufactured from high-quality metal to meet or exceed original factory specifications for fit, form, and function.
What common mistakes should I avoid during installation?
Avoid over-tightening the mounting bolts, which can damage the pulley or water pump flange. Ensure the pulley and mounting surface are clean before installation. Finally, double-check that the serpentine belt is routed correctly before starting the engine.
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, and 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?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, 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. 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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