Premium Electronic Fuel Injection Throttle Body Assembly (OE Part #12570800)

A failing throttle body can cripple your truck's performance, leading to rough idling, unexpected stalling, poor acceleration, and a dashboard lit up with check engine lights. Restore the crisp throttle response and reliability of your 4.8L, 5.3L, or 6.0L V8 engine with this Premium Electronic Fuel Injection Throttle Body Assembly.

Engineered to meet or exceed strict original equipment (OEM) standards, this vital engine management component accurately regulates the crucial air-to-fuel ratio entering your intake manifold. Featuring a heavy-duty aluminum housing and precision-machined internal valves, it is built to withstand extreme under-hood temperatures and heavy vibrations. Whether you are towing with your Silverado, hauling with your Sierra, or daily driving your Tahoe, this direct-fit replacement ensures smooth operation and optimal engine power.

Key Features

• Restores Engine Performance: Accurately regulates manifold airflow, achieving the perfect air-fuel mixture for improved horsepower, consistent idling, and instant throttle response.

• Direct OEM Fit: 100% compatible with factory connections (OE Part #12570800). Designed as a perfect match for the original car, requiring no cutting or wire splicing.

• Aerospace-Grade Aluminum Body: Constructed from high-strength aluminum to meet stringent temperature and high-vibration requirements, ensuring enhanced durability over factory plastic components.

• Smooth & Quiet Operation: Engineered for low leak rates to guarantee a smooth engine shutdown while minimizing unwanted noise, vibration, and harshness (NVH).

• Precision Flow Control: Accurate and repeatable flow control provides seamless suitability for NOx absorber functions and strict emissions standards.

• Factory Tested Quality: Built to rigorous quality control standards and 100% mechanically tested prior to leaving the factory to ensure optimal performance right out of the box.

Technical Specifications

Vehicle Fitment Guide

This throttle body is designed for a wide range of Gen III and early Gen IV LS-based V8 engines. Please verify your exact model and engine size prior to purchase.

Chevrolet & GMC Trucks (Silverado / Sierra)

• Chevy Silverado 1500 / GMC Sierra 1500 (4.8L, 5.3L, 6.0L): 2003–2006 (Includes 2007 Classic models)

• Chevy Silverado 1500 HD / GMC Sierra 1500 HD: 2003, 2005–2006 (Includes 2007 Classic models)

• Chevy Silverado 2500 / GMC Sierra 2500: 2003–2004

• Chevy Silverado 2500 HD / GMC Sierra 2500 HD (6.0L): 2003–2006 (Includes 2007 Classic models)

• Chevy Silverado 3500 / GMC Sierra 3500 (6.0L): 2003–2006 (Includes 2007 Classic models)

Chevrolet & GMC SUVs

• Chevy Tahoe / GMC Yukon (4.8L, 5.3L): 2003–2006

• Chevy Suburban 1500 / GMC Yukon XL 1500: 2003–2006

• Chevy Suburban 2500 / GMC Yukon XL 2500 (6.0L): 2003–2006

• Chevy Avalanche 1500: 2003–2006

Additional GM & Associated Platforms

• Cadillac Escalade (Base, ESV, EXT): 2003–2006

• Hummer H2: 2003–2007

• Chevy SSR: 2003–2004

• Chevy Trailblazer EXT (5.3L): 2003–2004

• GMC Envoy XL / XUV (5.3L): 2003–2004

• Buick Rainier (5.3L): 2004

• Isuzu Ascender (5.3L): 2003–2004