Speedmaster®

Pontiac 455 OEM 2 Bolt to 4 Bolt Straight Billet Steel Main Caps

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MPN PCE289.1013 UPC840136533733

Product Information

Overview

Speedmaster billet main caps are precision CNC-machined from superior-quality 1025 billet steel. These extreme main cap sets consist of the center three caps. Speedmaster billet main caps improve reliability in highly stressed engines by reducing distortion of the main bearing bores, and increasing the cap's resistance to closing up under high loads.

Specs

Brand:Speedmaster
Part Number:PCE289.1013
Part Type:Main Cap
Main Cap Position:3-center
Main Cap Fastener Style:Straight
Main Cap Fastener Quantity:4-bolt
Main Journal Type:Large journal
Main Cap Fasteners Included:No
Main Cap Material:Billet steel
Machine Work Required:Yes
Quantity:Sold as a set of 3.

Warranty Information

12-Month Limited Worldwide Warranty

Prop 65 Warning

This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Installation Guide

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This AI-generated guide is for general reference only and does not constitute official Speedmaster product documentation. Always verify fitment, torque specifications, and safety requirements before installation.