Fel-Pro Engine Crankshaft Seal Kit for Ford F-150 1983-2010 — Front & Rear OE-Fit Seals

Fel‑Pro BS 40644 is a complete engine crankshaft seal kit engineered to replace worn front and rear crank seals and restore reliable oil containment for compatible vehicles including many Ford F‑150 models.

This kit contains application-specific sealing components manufactured by Fel‑Pro to match OE form, fit and function so you can stop oil leaks and protect engine internals. Fel‑Pro designs and validates each gasket and seal for vehicle-specific tolerances and materials, helping technicians and DIYers get a dependable repair without guesswork. The BS 40644 kit covers a wide range of makes and models — always confirm fitment for your exact year, engine and trim before purchase.

Which vehicles and model years does this crankshaft seal kit fit?

BS 40644 is built to suit multiple platforms; it commonly fits Ford F‑150 applications and several other vehicles listed by Fel‑Pro. Compatibility varies by engine type and production year, so verify the part against your vehicle's details.

• Covers many Ford F‑150 model years referenced in product listings — check your year, engine and trim.
• Also noted for use on various Jaguar X‑Type and S‑Type models and specialty vehicles in Fel‑Pro documentation.
• Use the seller’s compatibility tool or VIN lookup to confirm fit before ordering.

What components and materials are included in the kit?

The BS 40644 package contains the crankshaft seals engineered for front and/or rear sealing duties plus any associated gaskets or installation rings needed for a standard crank seal service. Fel‑Pro selects materials to resist oil, heat and typical engine environments.

• Precision-molded crank seals sized to match OE sealing diameters and lip profiles.
• Application-specific gaskets or mounting rings where required for proper sealing.
• Materials chosen to withstand engine oil, heat cycles and normal wear for long service life.

How does this kit help with a crankshaft seal repair job?

Using an application-specific kit reduces rework by delivering seals sized to original specifications. That means fewer leaks after installation and a smoother repair process for professionals and experienced DIYers.

• Eliminates guesswork with seals matched to the vehicle’s crank dimensions and mounting surfaces.
• Saves time by bundling all required seals and related gaskets in one shipment.
• Tested for fit, form and function to minimize post-installation oil seepage.

Who is this for? The Fel‑Pro BS 40644 kit is intended for mechanics, restoration shops and knowledgeable DIYers performing crankshaft seal replacement or engine front/rear seal service on compatible vehicles. It’s especially useful when you want an OEM-grade replacement that’s been validated for proper fit. Before purchasing, always input the exact year, make, model, engine and trim into the seller’s compatibility checker (or use your VIN) to confirm this kit matches your vehicle. If the compatibility tool shows additional notes, review them carefully — some applications require special procedures or supplementary parts for a complete repair.