King Engine Bearings MB5353XPC XPC Race Series Main Bearing Set Ford 281 4.6L SOHC 16V pMaxKote Coated

The King Engine Bearings MB5353XPC is an XPC Race Series main bearing set engineered for the Ford 281 4.6L SOHC 16-valve Romeo iron block engine. Designed for high-performance and racing applications, this set pairs King's proven XP tri-metal construction with the advanced pMaxKote™ factory-applied polymer coating — delivering superior protection under extreme loads and demanding operating conditions.

King XP Race Series Construction:

• Advanced tri-metal structure featuring the pMax Black™ overlay — 24% harder than conventional tri-metal race bearing overlays, with a load carrying capacity up to 10,200 psi
• Developed specifically for high-performance applications using forged steel aftermarket crankshafts that produce sustained high loads
• Narrowed bearing design to clear large-radius fillet crankshafts common in performance builds
• Enlarged, chamfered oil holes for improved main bearing oiling
• Medium eccentricity for optimum load distribution across the bearing surface
• Bull's Eye Tolerance™ — wall thickness matched shell-to-shell to ±0.0001" for precise, consistent oil clearances

pMaxKote™ Polymer Coating Technology:

• Factory-applied nano-composite polymer coating (K-334) applied over the pMaxBlack™ overlay as an integrated part of the manufacturing process
• Contains ceramic nano-composite particles that function as a fourth bearing layer, significantly enhancing wear resistance
• Proven protection during metal-to-metal contact and against the erosive effects of cavitation
• Enhances seizure resistance and protects bearings during periods of oil starvation or marginal lubrication
• Zero added wall thickness — pMaxKote does not alter oil clearances or require clearance adjustment

Set Details:

• Application: Ford 281 4.6L SOHC 16V Romeo Iron Block
• Size: Standard
• Series: King XPC (pMaxKote coated racing line)
• Optional non-coated equivalent: MB5353XP (Racing Tri-Metal)
• OEM cross-reference: Optional to MB5353SI (Race Bearings, Tri-Metal pMaxKote Coated)

The MB5353XPC is highly recommended for high-horsepower builds, forced induction applications, and engine configurations using forged crankshafts. King Engine Bearings are the first choice in aviation and racing due to their rigorous multi-checkpoint quality control and proprietary manufacturing processes.