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Diamond Eye Performance

Diamond Eye EXHAUST KIT WITHOUT CLAMPS K4209A-1-RP

$657.57 $312.63 Save $344.94

SKU: D005 K4209A-1-RP

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

Easy — 1–2 hours

Description

The Diamond Eye Performance K4209A-1-RP is a 4-inch aluminized turbo-back single exhaust system with muffler replacement for 1989-1993 Dodge 5.9L Cummins Diesel 2500/3500 2WD trucks. It is designed to reduce EGTs, increase horsepower, and improve fuel mileage by reducing backflow restrictions. The kit includes necessary clamps, hangers, and brackets for installation, and can typically be installed in about an hour.

Fitment

Fitment Guaranteed

Don’t gamble
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.

Available on iOS & Android

Specifications

BrandDiamond Eye Performance
Part NumberD005 K4209A-1-RP

Videos

1st Gen Cummins Diamond Eye Exhaust Install

1st Gen Cummins Diamond Eye Exhaust Install
MBRP vs Flo-Pro vs Diamond Eye | 1st Gen Cummins Exhaust Comparison

MBRP vs Flo-Pro vs Diamond Eye | 1st Gen Cummins Exhaust Comparison
Diamond Eye 4" Exhaust with Muffler Install - Before & After Sound

Diamond Eye 4" Exhaust with Muffler Install - Before & After Sound

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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