Marine Serpentine Belt Pulley for MerCruiser 4.3/5.0/5.7L Idler
Marine Serpentine Belt Pulley for MerCruiser 4.3/5.0/5.7L Idler
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Marine Serpentine Belt Pulley for MerCruiser 4.3/5.0/5.7L Idler
Includes:
- Marine serpentine belt pulley
- Installation hardware
Fits Models:
- MerCruiser 4.3L
- MerCruiser 5.0L
- MerCruiser 5.7L
Model Years: 1990 - 2023
Submodels:
- Alpha One
- Bravo One
- Inboard/Outboard
Engine Options:
- V6 and V8 configurations
Description:
Enhance the performance and reliability of your MerCruiser engine with this high-quality marine serpentine belt pulley. Designed specifically for 4.3L, 5.0L, and 5.7L models, this idler pulley ensures smooth operation of your engine's serpentine belt system. Its durable construction provides long-lasting performance, reducing the risk of belt slippage and wear. This pulley is essential for maintaining optimal engine function, ensuring your boat runs smoothly on the water.
Features:
- Precision-engineered for specific MerCruiser models and years
- Improves belt alignment and tension for better engine performance
- Compatible with various submodels and engine configurations
- Easy installation with included hardware for a hassle-free upgrade
Upgrade your marine engine's efficiency and reliability with this essential serpentine belt pulley, designed to keep your boat performing at its best.

Marine Serpentine Belt Pulley for MerCruiser 4.3/5.0/5.7L Idler
Marine Serpentine Belt Pulley for MerCruiser 4.3/5.0/5.7L Idler
Marine Serpentine Belt Pulley for MerCruiser 4.3/5.0/5.7L Idler
Includes:
- Marine serpentine belt pulley
- Installation hardware
Fits Models:
- MerCruiser 4.3L
- MerCruiser 5.0L
- MerCruiser 5.7L
Model Years: 1990 - 2023
Submodels:
- Alpha One
- Bravo One
- Inboard/Outboard
Engine Options:
- V6 and V8 configurations
Description:
Enhance the performance and reliability of your MerCruiser engine with this high-quality marine serpentine belt pulley. Designed specifically for 4.3L, 5.0L, and 5.7L models, this idler pulley ensures smooth operation of your engine's serpentine belt system. Its durable construction provides long-lasting performance, reducing the risk of belt slippage and wear. This pulley is essential for maintaining optimal engine function, ensuring your boat runs smoothly on the water.
Features:
- Precision-engineered for specific MerCruiser models and years
- Improves belt alignment and tension for better engine performance
- Compatible with various submodels and engine configurations
- Easy installation with included hardware for a hassle-free upgrade
Upgrade your marine engine's efficiency and reliability with this essential serpentine belt pulley, designed to keep your boat performing at its best.