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V-Belt for Mercruiser, Volvo Penta, OMC Engines 110-160HP (57-64416, 841821, 912509)
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OEM Part Numbers
57-64416, 57-49211, 57-44206, 841821, 958314, 958359, 966382, 966978, 912509, 0912509
Compatible Models
Mercruiser
Four-Stroke Engines
- 2.3L "4" 140 (1987-1990)
Volvo Penta
Four-Stroke Engines
- AQ120, AQ125B, AQ131A, AQ131B, AQ131C, AQ145B, AQ151A, AQ151B, AQ151C, AQ171A, AQ171C, D30, D31, D40, D41, MD22A, MD22LA (late 1970s to early 1990s)
OMC
Four-Stroke Engines
- 888 2.3L Engines (1987-1990)
Installation Instructions
- Ensure the engine is turned off and cooled completely.
- Disconnect the battery to prevent accidental starting.
- Loosen the alternator pivot bolt just enough to allow slight movement. Also loosen any adjuster‑plate or tensioner bolts.
- Identify belt routing. Note the path around the crankshaft, water‑pump, alternator (and power‑steering if applicable) pulleys.
- Remove the old belt by swiveling the alternator or tensioner to relieve tension, then slip the belt off pulleys.
- Inspect pulley grooves for wear, rust or corrosion. Clean them to bare metal if needed.
- Route the new belt following the same pulley path. Ensure it seats properly in all V‑grooves.
-
Tension the belt:
- Swivel the alternator away from the engine to create proper belt tension.
- A correctly tensioned V‑belt deflects about 1 cm (½″) under moderate thumb pressure on the longest span.
- Tighten all bolts: Secure the adjuster‑plate bolt, then the main pivot bolt to factory torque specs.
- Reconnect the battery.
- Start the engine, observe belt tracking to ensure it’s centered in grooves and running smoothly.
- Shut down and recheck tension after a short run. Re-tension if necessary (new belts may stretch slightly initially).
Important Notes
- Verify that the product images and specifications match your original part.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Warranty Information
This product comes with a 1-year warranty against manufacturing defects under normal use conditions. Please contact our customer service team for warranty claims or additional product information.
Product Features
- High Quality: Manufactured to OEM specifications using the exact same material as the originals.
- Production Standards: Produced in an ISO9002 certified factory.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5-15 days.
- Direct from Manufacturer: Enjoy competitive prices without compromising quality.
Product Features
- High Quality: Manufactured to OEM specifications using the exact same material as the originals.
- Production Standards: Produced in an ISO9002 certified factory.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5-15 days.
- Direct from Manufacturer: Enjoy competitive prices without compromising quality.
Don't compromise on quality or performance. Choose JLM MARINE for reliable marine parts at competitive prices.
Need help? Click the live support at the lower right corner of the webpage or email us your engine details for the right parts.
We can ship to virtually any address in the world with free shipping available for most regions.
For our typical US and Canadian customers , our shipping timeframes are as follows:
- Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
- US warehouse shipment: orders will be delivered within 5 days after placing the order.
- China warehouse shipment: orders will be delivered about 12 days after placing the order.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.
As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.
We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.
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