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Exhaust› Exhaust Pipes, Systems and Components

Diamond Eye Performance

Diamond Eye KIT 4in TB HX40 DWNP WV-CLAMP MFLR RPLCMENT PIPE SGL AL 4-WHEEL DRIVE ONLY 89-93

$996.75 $451.13 Save $545.62

SKU: D005 K4211A-RP-HX40

In Stock
In Stock
Ships by Aug 10
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: K4211A-RP-HX40

MIA's Description

This Diamond Eye 4" stainless steel exhaust system is designed for 1989-1993 Dodge 5.9L Cummins 4WD trucks with an HX40 style turbo downpipe. It will not work with a factory turbo. Features mandrel-bent tubing, increased horsepower, torque, and lower EGTs.

Fitment

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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

BrandDiamond Eye Performance
Part NumberD005 K4211A-RP-HX40

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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