Engines and Components› Engines, Blocks and Components

ATK ENGINES

MAZDA B6 91 ENGINE

$1,850.56

SKU: A040 616J

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

Advanced — 4+ hours

Description

The ATK ENGINES 616J, also known as the ATK HP116, is a Chevy LM7 5.3L base engine designed for high performance, producing 500 horsepower and 440 lb-ft of torque. It features an OE LM7/5.3L Iron block, hypereutectic pistons with 10.1 compression, and AFR CNC ported aluminum cylinder heads. This crate engine can replace 2001-2007 Chevy 4.8L, 5.3L, and 6.0L engines, but requires ECM tuning and injector upgrades.

Fitment

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Specifications

BrandATK ENGINES
Part NumberA040 616J

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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