E6P5S12MCP Cross-Reference — Headlight Assembly for Peterbilt 579/587 | Aftermarket Replacement

E6P5S12MCP is a part reference number used to identify the headlight assembly for Peterbilt 579 and 587 trucks. Most owner-operators and fleet managers end up searching for this number when a headlight gets cracked, fogged, or damaged and the dealership quote comes back far higher than expected. This guide explains what E6P5S12MCP fits, which related reference numbers interchange with it, and where to order a direct-fit aftermarket replacement that ships quickly across the United States and Canada.

What E6P5S12MCP Fits

Based on the matching product in our catalog, E6P5S12MCP corresponds to the headlight assembly for Peterbilt 579 and 587 trucks. The fastest way to confirm you are on the right page is to check the part number printed on the label or molded into the housing of the headlight currently on your truck. If it reads E6P5S12MCP, or one of the interchange references below, the replacement linked on this page is the matching unit. If in doubt, send us your VIN and we will confirm fitment before you order.

Cross-Reference & Interchange

Truck parts frequently appear under different reference numbers across OEM and supplier catalogs. In our catalog, E6P5S12MCP is cross-referenced with the following numbers on the same replacement listing:

• P54-6163-100
• P54-6163-100R

If the number on your current headlight appears anywhere in the list above, the same aftermarket replacement applies and you can order with confidence.

Aftermarket Replacement for E6P5S12MCP

EverTrust Parts stocks a direct-fit aftermarket replacement for E6P5S12MCP: Aftermarket Headlight Assembly Compatible with Peterbilt® 579/587 P54-6163-100. For most fleets and owner-operators, quality aftermarket is the practical route — you get a brand-new unit designed to match the original mounting points and connections at a fraction of typical dealer pricing, which matters when the truck is sitting instead of earning.

Every order is dispatched within 24 hours, shipping is free across the United States and Canada, and the price you see at checkout is final — no import duties and no surprise fees at delivery.

Related: Peterbilt 389 Parts Guide

EverTrust Parts is an independent aftermarket parts supplier. Part reference numbers such as E6P5S12MCP are used strictly for compatibility identification purposes. The product linked above is an aftermarket replacement part, not a genuine Peterbilt product, and EverTrust Parts is not affiliated with, sponsored by, or endorsed by Peterbilt or any original equipment manufacturer.