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USD 35.17
Part #: DOR904-120

Dorman 904-120 Injector Cup & O-Rings

2001-2004 GM 6.6L Duramax LB7
Part #: DOR904-120
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The Dorman 904-120 Injector Cup & O-Rings are an affordable solution to replacing the Injector Cups in your 2001-2004 GM 6.6L Duramax LB7. Damaged Injector Cups can cause leaks that can cause engine damage. Dormans Fuel Injector Cup is manufactured from high-quality materials for a long service life.  


  • Plated Steel Construction For Fuel Resistance 
  • Heat-Resistant For Long Lasting Performance
  • Direct Replacement 
  • Sold Individually
Cross Reference Numbers:
GM OE Part#: 97188463, 94051259 (non-direct)

Install Note: Red Loctite required to seal injector cup to head (not included).

Vehicle Applications

2001 Chevy 6.6L LB7 Duramax
2002 Chevy 6.6L LB7 Duramax
2003 Chevy 6.6L LB7 Duramax
2004 Chevy 6.6L LB7 Duramax
2001 GMC 6.6L LB7 Duramax
2002 GMC 6.6L LB7 Duramax
2003 GMC 6.6L LB7 Duramax
2004 GMC 6.6L LB7 Duramax


  • MFG. Number 904-120
  • Manufacturer Name Dorman
  • Shipping Weight 1.00 lb.
  • Shipping Length 3 in.
  • Shipping Width 3 in.
  • Shipping Height 3 in.
  • Fuel Type Diesel
  • UPC 019495390749
  • Warranty Yes
  • Warranty Info Limited Lifetime
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm -
  • Cross Reference # 94051259, 97188463, DEC011120
  • Internal L4.00R4.00


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