DW400 Fuel pump module with CPE return kit for 1999-04 Silverado/Sierra

Name: DW400 Fuel pump module with CPE return kit for 1999-04 Silverado/Sierra
Brand: DeatschWerks
SKU: 9-401-603-7010
Price: 767.72 USD
Availability: InStock
Rating: 5.0 (5 reviews)

DW400 Fuel pump module with CPE return kit for 1999-04 Silverado/Sierra - Main image

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DW400 Fuel pump module with CPE return kit for 1999-04 Silverado/Sierra - View 3

$767.72 ~~$1129~~ In stock

Category: Electric Fuel Pump

DW400 Pump Module + Return Kit SS CPE for Chevy Silverado 1500/2500/3500 & GMC Sierra 1500/2500/3500 1999-2004 V8 4.8L/5.3L/6.0L Excl Flex Fuel

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Steven ★★★★★ Oct 22, 2026

The return kit saved me so much headache tuning my 6.0 swap—the lines fit perfectly and the pump keeps pressure rock solid even when I’m beating on it. Took about an hour longer than I planned, but that’s on me for not reading the instructions twice.

Carter ★★★★★ Oct 21, 2026

Install was straightforward on my 2003 Sierra 2500 with the 6.0L, and the CPE return kit made plumbing clean and simple. Fires right up and holds steady pressure even under heavy throttle.

Adam R. ★★★★★ Oct 20, 2026

The DW400 module dropped right into my 5.3L without any bracket tweaks, and the stainless CPE return kit kept the lines clean under the bed. Fuel pressure held steady at 58 psi through a full tank, so the install paid off on the first tow.