Engines and Components› Engines, Blocks and Components

ATK ENGINES

INFINITI RE5R05A AUTO 5-SPD

$4,791.67

SKU: A040 T8709AA

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The ATK ENGINES T8709AA, also known as HP109, is a 505HP Chevy LQ4 6.0L base engine. This engine is designed for replacement or performance swaps into compatible Chevrolet trucks and vans. It is part of the Gen III/IV small-block LS family, commonly found in 2001-2007 Silverado, Suburban, and Express models. Installation will require specific ECU, wiring harness, and accessories.

Fitment

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Specifications

BrandATK ENGINES
Part NumberA040 T8709AA

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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