V-Belt – Fits MerCruiser 3.0L (1999-2008) 135-140HP Models (Replaces 57-862054Q)

$16.00

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V-Belt – Fits MerCruiser 3.0L (1999-2008) 135-140HP Models (Replaces 57-862054Q) is backordered and will ship as soon as it is back in stock.

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

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This V-Belt is a high-quality replacement designed for MerCruiser 3.0L 4-cylinder engines (135-140HP, 4-Stroke) from model years 1999–2008. It ensures reliable operation of your engine’s accessory drive system, including the power steering pump, alternator, and water circulation pump.

It serves as a direct interchange for Mercury part numbers 57-862054Q, 57-8M2017519, 862054, and JLM Marine 23BL2282.

Installs on the engine's accessory drive.
Drives power steering, alternator, and cooling system components.
Includes one V-Belt for a complete replacement.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
Mercury	57-862054Q
Mercury	57-8M2017519
Mercury	862054
Mercury	862054Q
JLM Marine	23BL2282

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
MerCruiser	3.0L Alpha One	135-140	4-Stroke	1999–2008	57-862054Q	Serial No. 1A002000-1A020543, 1A020544 & up
MerCruiser	3.0L MPI EC	135-140	4-Stroke	2008+	57-862054Q	Serial No. 1A072812 & up
MerCruiser	3.0L TKS PLUS	135-140	4-Stroke	2008+	57-862054Q	GM181 engine

Technical Specs

Product Type: V-Belt
Installation: Engine Accessory Drive
Housing Color: Black
Dimensions: 39.5 inches (1003.3 mm)
Warranty: 1-year against manufacturing defects (JLM Marine)
Other Technical Attributes: Drives power steering, alternator, and cooling system components

What’s in the Box

1 x V-Belt (57-862054Q)

Installation Notes

Disconnect the boat's battery for safety.
Locate the V-belt routing on the engine. If unsure, take a photo or note the path.
Loosen the tensioner pulley or the alternator mounting bolts to release tension on the old belt.
Carefully slide the old belt off the pulleys.
Inspect all pulleys for wear, damage, or misalignment. Clean any debris from the pulley grooves.
Route the new belt according to the correct path, ensuring it is properly seated in each pulley groove.
Re-apply tension to the belt by tightening the tensioner or alternator. Proper tension is typically 1/2 inch of deflection with firm thumb pressure.
Double-check the belt's alignment and tension.
Reconnect the battery and start the engine briefly to ensure the belt runs smoothly and quietly.

Troubleshooting & FAQ

How do I know this V-belt will fit my MerCruiser 3.0L?

This belt is designed for specific serial number ranges of the MerCruiser 3.0L engine from 1999 onwards. Always check the Engine Compatibility table and compare your engine's serial number and model year to ensure a correct match.

What are the signs that my V-belt needs replacing?

Common signs of a failing V-belt include visible cracks, fraying, or glazing on the belt surface. You might also hear squealing sounds from the engine, especially during startup or acceleration, or notice issues with charging (alternator) or engine cooling.

Is this belt difficult to install?

Installation is straightforward for those with mechanical experience. It involves releasing the belt tensioner, swapping the belt, and re-tensioning it. However, if you are unfamiliar with engine maintenance, professional installation is recommended to ensure proper tension and alignment.

How often should I replace my engine's V-belt?

V-belt life varies based on use and conditions. It is best to inspect the belt during regular engine maintenance (e.g., every 50-100 hours or annually) and replace it at the first sign of wear or damage to prevent unexpected failure.

Can a worn-out belt cause my engine to overheat?

Yes. The V-belt often drives the engine's water circulation pump. If the belt slips or breaks, the pump will stop working, leading to rapid overheating and potential engine damage.

Is there a break-in period for a new V-belt?

There is no formal break-in period, but it is good practice to re-check the belt tension after a few hours of engine operation, as new belts may stretch slightly.

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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