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Exterior Components Body Panels and Components

Industrial Injection

Industrial Injection 01-04.5 Chevrolet GM 6.6L Duramax LB7 Injection Line - Cylinders 3 and 6

$115.52 $112.27 Save $3.25

SKU: I002 AP63721

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

Easy — 1–2 hours

Description

The Industrial Injection AP63721 is a fuel injection line designed for the 2001-2004 GM 6.6L Duramax LB7 engine. This line is specifically for cylinders 3 and 6. It is a replacement part intended to maintain the proper fuel delivery to these cylinders.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandIndustrial Injection
Part NumberI002 AP63721

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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