Tension Pulley – Fits Volvo Penta KAD/KAMD/TAMD 170-300 HP (Replaces 861563, 877180)
Tension Pulley – Fits Volvo Penta KAD/KAMD/TAMD 170-300 HP (Replaces 861563, 877180) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Tension Pulley – Fits Volvo Penta KAD/KAMD/TAMD 170-300 HP (Replace...
Product Details
This aftermarket Tension Pulley is designed to fit Volvo Penta KAD/KAMD/TAMD series marine diesel engines from 170–300 HP, typically manufactured between 1995 and 2005. It ensures proper belt tension for reliable engine operation.
It serves as a direct cross-reference for Volvo Penta part numbers 861563 and 877180, and aftermarket number 18563.
- Installs onto the belt tensioner assembly.
- Constructed from high-strength, wear-resistant material.
- Engineered to meet or exceed OEM specifications for fit and performance.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Volvo Penta | 861563 | Original OEM Part Number |
| Volvo Penta | 877180 | Original OEM Part Number |
| Aftermarket | 18563 | Direct Replacement |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Volvo Penta engines, this part is compatible with select models in the KAD, KAMD, and TAMD series.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Volvo Penta | KAD32P-A | 170–175 | 4-Stroke | 1996–2005 | 861563/877180 | |
| Volvo Penta | KAD43 | 230 | 4-Stroke | 1997–2005 | 861563/877180 | Includes KAD43P-A |
| Volvo Penta | KAD44 | 260 | 4-Stroke | 1997–2004 | 861563/877180 | Includes KAD44P-A/B/C |
| Volvo Penta | KAMD43 | 230 | 4-Stroke | 1997–2005 | 861563/877180 | Includes KAMD43P-A |
| Volvo Penta | KAMD300 | 285–300 | 4-Stroke | 2001–2005 | 861563/877180 | |
| Volvo Penta | TAMD42WJ-A | 230 | 4-Stroke | 1995–2003 | 861563/877180 | |
| Volvo Penta | KAD32 | 170–175 | 4-Stroke | 1996–2005 | 861563/877180 | FridayParts listing |
Technical Specs
- Product Type
- Tension Pulley
- Installation
- Belt Tensioner Assembly
- Housing Material
- High-strength wear-resistant material
- Dimensions
- Diameter: 70 mm
- Weight
- 0.29 kg (0.64 lbs) including packaging
- Warranty
- 1-year against manufacturing defects
What’s in the Box
- 1 x Tension Pulley (Replaces 861563, 877180)
Installation Notes
- Turn off the engine and allow it to cool completely. Disconnect the negative battery cable.
- Locate and loosen the belt tensioner assembly, then remove the old drive belt.
- Unbolt and remove the damaged tension pulley from its mounting bracket.
- Position the new tension pulley and tighten mounting bolts to manufacturer torque specifications.
- Reinstall the drive belt and adjust tension using a belt tension gauge to OEM specifications.
- Reconnect the negative battery cable. Start the engine and verify smooth operation.
Troubleshooting & FAQ
How do I know if this tension pulley will fit my engine?
This pulley is designed for specific Volvo Penta KAD, KAMD, and TAMD engines from 1995–2005. The best way to ensure fitment is to verify your engine model and year against the compatibility table. If you are unsure, please compare the part numbers (861563, 877180) and visual appearance with your existing part.
What are the signs of a failing tension pulley?
Common symptoms of a worn-out tension pulley include chirping or squealing noises from the engine bay, visible wobble or play in the pulley, premature belt wear or damage, and accessories (like the alternator or water pump) not functioning correctly due to improper belt tension.
Is there a recommended replacement interval?
There is no fixed interval, as lifespan depends on engine hours and operating conditions. However, tension pulleys are a common wear item. It's best practice to inspect the pulley for noise or wobble during routine belt service and replace it if any signs of wear are present, or as a preventative measure every major service.
My old part is 861563. Is 877180 the same part?
Yes, part numbers 861563 and 877180 are listed as direct, interchangeable replacements for the same applications on compatible Volvo Penta engines. This aftermarket part is designed to replace both.
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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