Genuine Ford F-150 Mustang Ranger Drive Belt Tensioner Bolt W709638-S439 - Ford (W709638-S439)
2011-2025 Ford - w709638s439
Genuine Ford F-150 Mustang Ranger Drive Belt Tensioner Bolt W709638-S439 - Ford (W709638-S439)
2011-2025 Ford - w709638s439
- MSRP: $5.00
- Discount: $1.85 (37% off)
- Sale Price: $3.15
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Details
- Brand:
- SKU:
W709638-S439
- Other Names:
Tensioner Bolt, Starter Bolt, Starter Mount Bolt, Bolt
- Description:
This is a Ford bolt carried under base number W709638 (catalog base HB1) and finish code S439, used to mount the accessory drive belt tensioner to the engine. Dealer catalogs name it as a bolt or a belt tensioner bolt. Representative applications include F-150, Mustang, and Ranger with 5.0L, 5.2L, 1.5L, and 1.6L engines, including supercharged versions, along with Lincoln Mark LT; these are examples rather than a complete fitment list. The bolt clamps the tensioner so it holds correct tension on the serpentine belt and pivots smoothly as the belt loads change. A loose or missing tensioner bolt can let the tensioner shift or vibrate, causing belt squeal, accelerated wear, or in the worst case a thrown belt that stops the water pump and charging system. Because the bolt sees both clamp load and vibration, the correct length, thread, and grade matter. Confirm this bolt against your VIN or a Ford parts diagram before ordering. This is a multi-year service part that fits across the model years of the listed Ford applications.
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Vehicle Fitment
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