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Part record

Duramax LML Fuel Contamination Repair Kit, 2011-2016 (Alliant Power / XDP)

aggregated Aftermarket MPNAlliant Power; XDP AP57004 / XD517

Full high-pressure fuel system decontamination after a CP4.2 cascade: Alliant Power AP57004 (covers rails 12620532/12651989, injector set 19256590, lines and seals) and the XDP OER-series XD517 alternative. Both list the 2011-2016 LML application including Express/Savana vans. Purpose: The only reliable repair once CP4 metal is downstream - the failure-mode record documents the cascade economics.

Where to buy

SellerPriceChecked
Dave's Auto Center $4832.42 2026-10-27
Dave's Auto Center $3975.95 2026-10-27

Dave's Auto Center's price, the same as in his store: we check it daily and the page follows a change within a day. No paid placement in the data layer.

What this record does and doesn't claim

Listed at Dave's Auto Center (checked 2026-10-24); fitment years per that listing.

Fits (48 configurations)