King MB5353XP STD XP pMaxBlack Main Bearings Ford 281 4.6L SOHC 16V 2V Mustang

Vehicle Fitment

• 1991-2011 Lincoln Town Car (Base, Cartier, Cypress, Executive, Executive L, Signature, Signature L, Signature Limited, Designer Series, Jack Nicklaus, Protection Series, RWD, 4.6L SOHC 16V V8)
• 1996-2011 Ford Crown Victoria (Base, S, LX, LX Sport, Fleet, LWB, Police Interceptor, Special Edition, RWD, 4.6L SOHC 16V V8)
• 1992-2011 Mercury Grand Marquis (GS, LS, LSE, RWD, 4.6L SOHC 16V V8)
• 1996-2004 Ford Mustang GT (Base, RWD, 4.6L SOHC 16V V8)
• 1997-1999 Ford F-150 / F-250 (XL, XLT, Lariat, RWD/4WD, 4.6L SOHC 16V V8)
• 1997-2014 Ford E-150 / E-250 (Base, XL, XLT, Club Wagon, RWD, 4.6L SOHC 16V V8)
• 2004 Ford F-150 Heritage (XL, XLT, RWD/4WD, 4.6L SOHC 16V V8)

Fitment Notes

• Fits Ford 281 CID 4.6L SOHC 16V (2-valve) Modular V8 - Romeo and Windsor iron block variants; confirm block casting before ordering as some internal dimensions differ between plants
• Standard (STD) size - for use on crankshafts at factory main journal diameter; always measure journals before ordering
• XP Series = pMaxBlack tri-metal race construction; designed for high-performance and race applications using forged steel crankshafts under sustained high load
• This is a distinct part number from MB5280XP - the MB5353XP is specific to the 4.6L SOHC 16V 2-valve Romeo/Windsor configuration used in Crown Victoria, Town Car, and early Mustang GT platforms
• Does not fit the 4.6L SOHC 3-valve (2005+ Mustang GT), 4.6L DOHC 32-valve, or 5.4L variants - use appropriate part numbers for those applications
• Available in STDX, .026mm, +0.25mm, +0.50mm, +0.75mm, and +1.0mm undersizes under separate part numbers

Features

• pMaxBlack tri-metal overlay is 24% harder than conventional race bearings, rated up to 10,200 PSI load capacity
• SecureBond micro-etch adhesion process prevents delamination under high-RPM and sustained thermal cycling
• Narrowed design accommodates large-radius aftermarket and OE forged steel crankshafts
• Enlarged chamfered oil holes improve lubrication delivery to crankshaft journals under high-load conditions
• EccentriX eccentricity profiling ensures a stable hydrodynamic oil film across all 5 main journals
• Bull's Eye Tolerance wall thickness held to ±0.0001" for consistent clearance across all 5 main journals
• Suitable for street/strip, supercharged, and sustained performance applications on the 4.6L 2V platform
• Lead-free construction meets current environmental compliance standards

Specifications

• Part Number: MB5353XP
• Size: Standard (STD)
• Series: XP (pMaxBlack Tri-Metal Race Bearings)
• Engine: Ford 281 CID 4.6L SOHC 16V (2-Valve) Modular V8
• Overlay Load Capacity: Up to 10,200 PSI
• Wall Thickness Tolerance: ±0.0001"
• Position: Crankshaft Main (Upper and Lower shells)
• Quantity: 5 pairs (10 shells total - full V8 main bearing set)
• Available Sizes: STD / STDX / .026mm / +0.25mm / +0.50mm / +0.75mm / +1.0mm

Included Components

• 5x Upper Main Bearing Shells
• 5x Lower Main Bearing Shells

Product Description

The King MB5353XP is a standard-size XP Series race-grade crankshaft main bearing set engineered for the Ford 281 CID 4.6L SOHC 16V (2-valve) Modular V8 - the long-running platform found in the Crown Victoria, Lincoln Town Car, Mercury Grand Marquis, early Mustang GT, F-150/F-250, and E-Series vans from 1991 through 2014. Using King's pMaxBlack tri-metal structure - 24% harder than conventional race bearings and rated to 10,200 PSI - the MB5353XP is the race-grade upgrade over the OE-replacement SI or HP Series for builders running forged steel crankshafts or high-output street/strip builds on this engine platform.

This is a platform-specific bearing distinct from the MB5280XP, which covers the broader SOHC 2V/3V Modular family including truck and F-150 applications with different bore spacing or block configurations. Always confirm your specific block casting and engine configuration before ordering. As a standard-size set, the MB5353XP fits 4.6L SOHC 16V crankshafts at factory main journal diameter. Undersized variants in multiple steps up to +1.0mm are available under separate part numbers for reconditioned crankshafts.