Dynamic Friction 631-54188L Disc Brake Rotor - Rear Left

Drilled and Slotted Rear Rotor for Ford F-150

The Dynamic Friction DFC Brake Rotor - Drilled and Slotted - Silver, part number 631-54188L, is a rear left disc brake rotor built for select Ford F-150 and Lincoln Mark LT applications. It features a vented design, directional slotted X drilled surface, and a zinc silver hat finish with rust-resistant coating for added corrosion protection.

Key Features

• Part number 631-54188L for rear left brake service
• Fits select 2004-2011 Ford F-150 rear left applications
• Fits select 2004-2011 Lincoln Mark LT rear left applications
• Drilled and slotted rotor surface for directional braking performance
• Vented rotor construction
• Outside diameter: 348 mm
• Nominal thickness: 20 mm; discard thickness: 18.5 mm
• 6-lug pattern with 135 mm bolt circle diameter
• Zinc silver hat finish with rust-resistant coating

Product Details

This DFC Brake Rotor - Drilled and Slotted - Silver is built around the listed dimensions and fitment requirements for rear left service on the Ford F-150 and Lincoln Mark LT. The 348 mm outside diameter, 20 mm nominal thickness, 18.5 mm discard thickness, and 86 mm overall height help match the specified brake setup, while the 6-lug, 135 mm bolt circle configuration supports the confirmed vehicle applications. The directional slotted X drilled surface and vented rotor design are specified for this application, and the zinc silver hat finish adds a clean, corrosion-resistant appearance.

Fits 2005-2011 Ford F-150, rear left. Fits 2010-2011 Lincoln Mark LT, rear left. Fits 2005-2008 Ford F-150, rear left with 6 lug wheels and bearing retainer nut part number 345-54003 where noted. Fits 2006-2008 Lincoln Mark LT, rear left with 6 lug wheels and base payload package where noted. Fits 2004 Ford F-150 and 2004 Ford F-150 Heritage, rear left in the listed new model or new body style configurations. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Uses

• Replacing a worn rear left rotor on a Ford F-150
• Restoring braking performance on a Lincoln Mark LT rear axle
• Addressing rotor scoring, grooves, or uneven braking feel
• Correcting vibration or pulsation caused by rotor wear
• Replacing a rotor that has reached discard thickness

Installation Notes

Verify rear left position, 6-lug wheel configuration, and the listed model-year notes before installation. Confirm rotor dimensions, bolt circle diameter, and center hole diameter match the vehicle’s brake setup. On applications that reference bearing retainer nut part number 345-54003, confirm that the correct hardware configuration is present before service. Always inspect pads, caliper condition, and related brake components during rotor replacement.

Quality Assurance

Dynamic Friction identifies this rotor with a rust-resistant coating and zinc silver hat finish for corrosion protection in brake service applications. The part is specified to the listed dimensions and fitment details for the confirmed Ford F-150 and Lincoln Mark LT rear left applications.