O-Ring Seal Brian Tooley Racing Intake Manifold

Description

Product Overview

Brian Tooley Racing (BTR) has engineered a premium set of eight O‑Ring seals specifically for the Gen V LT Trinity intake manifold. Each O‑ring is molded from a high‑temperature, fuel‑resistant elastomer that tolerates the extreme conditions found in modern V8 engines. The #142 O‑Ring 70A model matches the original equipment specifications, delivering a perfect fit for L83, L86 and LT1 applications. By replacing worn or damaged seals, these O‑rings eliminate air leaks, maintain the correct air‑fuel mixture, and help you extract the maximum performance from your engine.

Usage

These O‑rings are intended for installation on the intake manifold of Gen V LT engines, including the 5.3L L83, 6.2L L86 and the high‑output LT1. Whether you are rebuilding a street‑driven truck, preparing a track car, or simply performing routine maintenance, the seals provide a reliable barrier against unmetered air. Installation requires removal of the intake manifold, cleaning of the sealing surfaces, and careful placement of each O‑ring into its designated groove. The set is suitable for both professional mechanics and experienced DIY enthusiasts.

Why Choose Us

Brian Tooley Racing is renowned for its dedication to quality and performance in the automotive aftermarket. Each O‑ring undergoes rigorous testing for dimensional accuracy, tensile strength, and heat resistance, ensuring consistency across every batch. The use of a proprietary fuel‑resistant compound extends service life even under aggressive driving conditions. Moreover, the set includes a full complement of eight O‑rings, eliminating the need for additional purchases and guaranteeing a complete seal restoration.

Key Features

• Direct replacement for BTR Gen V LT Trinity intake manifold seals
• High‑temperature, fuel‑resistant elastomer for long‑lasting durability
• Precision‑engineered fit for L83, L86 and LT1 engines
• Eight O‑rings per kit provide a complete seal solution
• Improves airflow, throttle response and overall horsepower

FAQ

Do these O‑rings fit other engine families?

The #142 O‑Ring 70A is sized specifically for Gen V LT Trinity manifolds. While they may physically fit similar‑sized grooves, we recommend using the exact BTR part number for optimal sealing performance.

Can I install the O‑rings myself?

Yes. The installation process is straightforward for anyone with basic mechanical skills. Ensure the manifold surfaces are clean, apply a light coat of engine oil to the O‑rings, and seat them firmly into their grooves before re‑assembling the manifold.

What material are the O‑rings made from?

They are manufactured from a high‑grade, heat‑resistant nitrile rubber compound that resists fuel, oil and high exhaust temperatures, providing reliable performance in both street and track environments.

How often should I replace these O‑rings?

Replacement intervals depend on driving conditions. For daily drivers, inspect the seals every 30,000 miles; for high‑performance or track use, consider inspection at 15,000‑20,000 miles.

Will these O‑rings improve my engine’s power?

By eliminating air leaks and ensuring a proper seal, the O‑rings help maintain the intended air‑fuel ratio, which can lead to smoother throttle response and a modest increase in horsepower, especially in engines that were previously suffering from manifold leaks.