Home› Air and Fuel Delivery > Fuel Injection System and Related Components› Dorman 502-550 Diesel Fuel Injector Pump
Dorman 502-550 Diesel Fuel Injector PumpOE Quality 60-Day Returns
Dorman 502-550 Diesel Fuel Injector Pump - view 1
Dorman 502-550 Diesel Fuel Injector Pump - view 2
Dorman 502-550 Diesel Fuel Injector Pump - view 3
Dorman 502-550 Diesel Fuel Injector Pump - view 4
Dorman 502-550 Diesel Fuel Injector Pump - view 5
Dorman 502-550 Diesel Fuel Injector Pump - view 6
Part #: 502-550

Dorman 502-550 Diesel Fuel Injector Pump

⚙️ 179 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$1,146.91Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Blazer, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500, Express 2500, Express 3500, G20, G30, K1500, K1500 Suburban, K2500, K2500 Suburban, K3500, P30, P3500, Savana 2500, Savana 3500, Tahoe, and Yukon
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Diesel Fuel Injector Pump options

Overview of Dorman Diesel Fuel Injector Pump 502-550

The Dorman 502-550 diesel fuel injector pump is designed for reliable mechanical fuel delivery in select Chevrolet and GMC diesel vehicles. Engineered with precision, this pump features a mechanical design with multiple ports and terminals to ensure consistent performance in demanding conditions.

  • Mechanical diesel fuel injector pump with 6 ports for efficient fuel flow
  • Equipped with 8 male terminals and 1 female connector for secure electrical connections
  • Pin-type terminal configuration for compatibility with factory wiring
  • Compatible with Chevrolet and GMC models including Blazer, C1500, K1500, Tahoe, Yukon, and more
  • Does not include mounting hardware, gasket, or wiring harness

Detailed Product Description

The Dorman 502-550 diesel fuel injector pump is a mechanical pump designed to meet the fuel delivery requirements of various Chevrolet and GMC diesel trucks and SUVs. Featuring 6 ports, this pump facilitates precise fuel injection timing and volume control. The pump includes 8 male terminals and a single female connector, all utilizing pin-type terminals to ensure proper electrical interfacing with the vehicle's existing wiring harness. This pump is intended for vehicles such as the Chevrolet C1500 Suburban, GMC Savana 3500, and Chevrolet Tahoe, among others. Note that mounting hardware, gaskets, and wiring harnesses are not included, so these components must be sourced separately if needed.

Compatible Vehicles and Applications

  • Chevrolet Blazer and Tahoe diesel models
  • GMC C1500, C2500, and C3500 diesel trucks
  • Chevrolet and GMC Suburban diesel variants
  • Express 2500 and 3500 diesel vans
  • G20, G30, K1500, K2500, K3500 diesel trucks

Installation Notes and Tips

  • Verify vehicle compatibility using the part number 502-550 before installation
  • Ensure all electrical connections match the pin-type terminals and connector genders
  • Replace any worn gaskets or seals separately as they are not included
  • Consult vehicle service manual for mechanical pump installation procedures
  • Check fuel lines and fittings for leaks after installation

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 502-550 diesel fuel injector pump undergoes rigorous quality control to ensure durability and reliable operation in diesel fuel systems. Warranty coverage details should be confirmed at the time of purchase, as they may vary by distributor or retailer.

BrandDorman
Part Number502-550
Terminal TypePin
Mounting Hardware IncludedNo
Connector Quantity1
Gasket Or Seal IncludedNo
Terminal Quantity8
Connector GenderFemale
Terminal GenderMale
Wiring Harness IncludedNo
Port Quantity6
Pump TypeMechanical
Package Contents1 pump

This part fits 179 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2002ChevroletExpress 25006.5LV8N/A
2002ChevroletExpress 35006.5LV8N/A
2002GMCSavana 25006.5LV8N/A
2002GMCSavana 35006.5LV8N/A
2001ChevroletExpress 25006.5LV8N/A
2001ChevroletExpress 35006.5LV8N/A
2001GMCSavana 25006.5LV8N/A
2001GMCSavana 35006.5LV8N/A
2000ChevroletC25006.5LV8N/A
2000ChevroletC35006.5LV8N/A
2000ChevroletExpress 25006.5LV8N/A
2000ChevroletExpress 35006.5LV8N/A
2000ChevroletK25006.5LV8N/A
2000ChevroletK35006.5LV8N/A
2000GMCC25006.5LV8N/A
2000GMCC35006.5LV8N/A
2000GMCK25006.5LV8N/A
2000GMCK35006.5LV8N/A
2000GMCSavana 25006.5LV8N/A
2000GMCSavana 35006.5LV8N/A
1999ChevroletC1500 Suburban6.5LV8N/A
1999ChevroletC25006.5LV8N/A
1999ChevroletC2500 Suburban6.5LV8N/A
1999ChevroletC35006.5LV8N/A
1999ChevroletExpress 25006.5LV8N/A
1999ChevroletExpress 35006.5LV8N/A
1999ChevroletK1500 Suburban6.5LV8N/A
1999ChevroletK25006.5LV8N/A
1999ChevroletK2500 Suburban6.5LV8N/A
1999ChevroletK35006.5LV8N/A
1999ChevroletP306.5LV8N/A
1999ChevroletTahoe6.5LV8N/A
1999GMCC1500 Suburban6.5LV8N/A
1999GMCC25006.5LV8N/A
1999GMCC2500 Suburban6.5LV8N/A
1999GMCC35006.5LV8N/A
1999GMCK1500 Suburban6.5LV8N/A
1999GMCK25006.5LV8N/A
1999GMCK2500 Suburban6.5LV8N/A
1999GMCK35006.5LV8N/A
1999GMCP35006.5LV8N/A
1999GMCSavana 25006.5LV8N/A
1999GMCSavana 35006.5LV8N/A
1998ChevroletC15006.5LV8N/A
1998ChevroletC1500 Suburban6.5LV8N/A
1998ChevroletC25006.5LV8N/A
1998ChevroletC2500 Suburban6.5LV8N/A
1998ChevroletC35006.5LV8N/A
1998ChevroletExpress 25006.5LV8N/A
1998ChevroletExpress 35006.5LV8N/A
1998ChevroletK15006.5LV8N/A
1998ChevroletK1500 Suburban6.5LV8N/A
1998ChevroletK25006.5LV8N/A
1998ChevroletK2500 Suburban6.5LV8N/A
1998ChevroletK35006.5LV8N/A
1998ChevroletP306.5LV8N/A
1998ChevroletTahoe6.5LV8N/A
1998GMCC1500 Suburban6.5LV8N/A
1998GMCC25006.5LV8N/A
1998GMCC2500 Suburban6.5LV8N/A
1998GMCC35006.5LV8N/A
1998GMCK15006.5LV8N/A
1998GMCK1500 Suburban6.5LV8N/A
1998GMCK25006.5LV8N/A
1998GMCK2500 Suburban6.5LV8N/A
1998GMCK35006.5LV8N/A
1998GMCP35006.5LV8N/A
1998GMCSavana 25006.5LV8N/A
1998GMCSavana 35006.5LV8N/A
1997ChevroletC15006.5LV8N/A
1997ChevroletC1500 Suburban6.5LV8N/A
1997ChevroletC25006.5LV8N/A
1997ChevroletC2500 Suburban6.5LV8N/A
1997ChevroletC35006.5LV8N/A
1997ChevroletExpress 25006.5LV8N/A
1997ChevroletExpress 35006.5LV8N/A
1997ChevroletK15006.5LV8N/A
1997ChevroletK1500 Suburban6.5LV8N/A
1997ChevroletK25006.5LV8N/A
1997ChevroletK2500 Suburban6.5LV8N/A
1997ChevroletK35006.5LV8N/A
1997ChevroletP306.5LV8N/A
1997ChevroletTahoe6.5LV8N/A
1997GMCC15006.5LV8N/A
1997GMCC1500 Suburban6.5LV8N/A
1997GMCC25006.5LV8N/A
1997GMCC2500 Suburban6.5LV8N/A
1997GMCC35006.5LV8N/A
1997GMCK15006.5LV8N/A
1997GMCK1500 Suburban6.5LV8N/A
1997GMCK25006.5LV8N/A
1997GMCK2500 Suburban6.5LV8N/A
1997GMCK35006.5LV8N/A
1997GMCP35006.5LV8N/A
1997GMCSavana 25006.5LV8N/A
1997GMCSavana 35006.5LV8N/A
1997GMCYukon6.5LV8N/A
1996ChevroletC15006.5LV8N/A
1996ChevroletC1500 Suburban6.5LV8N/A
1996ChevroletC25006.5LV8N/A
1996ChevroletC2500 Suburban6.5LV8N/A
1996ChevroletC35006.5LV8N/A
1996ChevroletExpress 25006.5LV8N/A
1996ChevroletExpress 35006.5LV8N/A
1996ChevroletG306.5LV8N/A
1996ChevroletK15006.5LV8N/A
1996ChevroletK1500 Suburban6.5LV8N/A
1996ChevroletK25006.5LV8N/A
1996ChevroletK2500 Suburban6.5LV8N/A
1996ChevroletK35006.5LV8N/A
1996ChevroletP306.5LV8N/A
1996ChevroletTahoe6.5LV8N/A
1996GMCC15006.5LV8N/A
1996GMCC1500 Suburban6.5LV8N/A
1996GMCC25006.5LV8N/A
1996GMCC2500 Suburban6.5LV8N/A
1996GMCC35006.5LV8N/A
1996GMCG35006.5LV8N/A
1996GMCK15006.5LV8N/A
1996GMCK1500 Suburban6.5LV8N/A
1996GMCK25006.5LV8N/A
1996GMCK2500 Suburban6.5LV8N/A
1996GMCK35006.5LV8N/A
1996GMCP35006.5LV8N/A
1996GMCSavana 25006.5LV8N/A
1996GMCSavana 35006.5LV8N/A
1996GMCYukon6.5LV8N/A
1995ChevroletC15006.5LV8N/A
1995ChevroletC1500 Suburban6.5LV8N/A
1995ChevroletC25006.5LV8N/A
1995ChevroletC2500 Suburban6.5LV8N/A
1995ChevroletC35006.5LV8N/A
1995ChevroletG206.5LV8N/A
1995ChevroletG306.5LV8N/A
1995ChevroletK15006.5LV8N/A
1995ChevroletK1500 Suburban6.5LV8N/A
1995ChevroletK25006.5LV8N/A
1995ChevroletK2500 Suburban6.5LV8N/A
1995ChevroletK35006.5LV8N/A
1995ChevroletP306.5LV8N/A
1995ChevroletTahoe6.5LV8N/A
1995GMCC15006.5LV8N/A
1995GMCC1500 Suburban6.5LV8N/A
1995GMCC25006.5LV8N/A
1995GMCC2500 Suburban6.5LV8N/A
1995GMCC35006.5LV8N/A
1995GMCG25006.5LV8N/A
1995GMCG35006.5LV8N/A
1995GMCK15006.5LV8N/A
1995GMCK1500 Suburban6.5LV8N/A
1995GMCK25006.5LV8N/A
1995GMCK2500 Suburban6.5LV8N/A
1995GMCK35006.5LV8N/A
1995GMCP35006.5LV8N/A
1995GMCYukon6.5LV8N/A
1994ChevroletBlazer6.5LV8N/A
1994ChevroletC15006.5LV8N/A
1994ChevroletC25006.5LV8N/A
1994ChevroletC2500 Suburban6.5LV8N/A
1994ChevroletC35006.5LV8N/A
1994ChevroletG206.5LV8N/A
1994ChevroletG306.5LV8N/A
1994ChevroletK15006.5LV8N/A
1994ChevroletK25006.5LV8N/A
1994ChevroletK2500 Suburban6.5LV8N/A
1994ChevroletK35006.5LV8N/A
1994ChevroletP306.5LV8N/A
1994GMCC15006.5LV8N/A
1994GMCC25006.5LV8N/A
1994GMCC2500 Suburban6.5LV8N/A
1994GMCC35006.5LV8N/A
1994GMCG25006.5LV8N/A
1994GMCG35006.5LV8N/A
1994GMCK15006.5LV8N/A
1994GMCK25006.5LV8N/A
1994GMCK2500 Suburban6.5LV8N/A
1994GMCK35006.5LV8N/A
1994GMCP35006.5LV8N/A
1994GMCYukon6.5LV8N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1256130719209059739-101IP28

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

Related Articles