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$179.35 from $211.63

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  • In Stock
  • Ships out in 1-2 business days
  • FREE SHIPPING
  • Set of 2
  • Low Price Guarantee
  • 4 4 out of 5 stars
    (1 customer reviews)

  • Part #: F3111500
  • Mfr #: 11500FLT
  • Payment Methods:

1979-1986 GMC C2500 Suburban Headers - Flowtech - Flowtech I, Black, Steel, 4-1, 49-state legal - no CA shipments, Minor modifications required

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  • Manufacturer Info
  • Extended Warranty
  • Related Products
  • Fitment Info
FLOWTECH I STANDARD FULL-LENGTH HEADERS, SATIN BLACK HI-TEMPERATURE PAINTED -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; 1.5 in. tube diameter, 16-gauge tube wall thickness, 3 in. weld-on collector, standard head flange; All mounting hardware such as bolts, nuts, and premium gasket are included; Full-length style; Round head port; These headers are precision-engineered and leak-tested to provide the maximum performance and fuel efficiency of your engine; Formed from specially selected 0.060 cold roll flash controlled tubing with high quality electrostatically-applied satin black paint finish; They feature Flowtech's exclusive, thick, and mandrel-formed power plenum collector; All ports are precisely fitted and finished with sturdy and leaf-proof o-ringed port seals; Must modify stock exhaust to retain catalytic converters; Applications with oxygen sensor use reducer part number 10105 for 2.5 in. 3-bolt flange or part number 10110 for 3 in. 3-bolt flange; It is necessary to remove the rubber stopper below the starter on 83-84 4WD; Pre-70 vehicles with exhaust manifold mounted alternator/generator use bracket part number 10031FLT; May require clutch linkage modifications; Fits C30 crew cab type chassis only; Will not fit angle plug heads; Also available with A.I.R. injection manifold welded in place.
  • Series: Flowtech I
  • Material: Steel
  • Design: 4-1
  • Color/Finish: Black
  • Emissions: 49-state legal - no CA shipments
  • Product Fit: Minor modifications required
  • Quantity Sold: Set of 2
  • Anticipated Ship Out Time: 1-2 business days
  • Collector Attachment Style: Weld-on
  • Collector Diameter: 3 in.
  • Equal Length Primary Tubes: Yes
  • Head Flange Style: Standard
  • Head Port Shape: Round
  • Includes: Gasket(s)
  • Number of Cylinders: 8
  • Primary Tube Diameter: 1.5 in.
  • Primary Tube Wall Thickness: 16-gauge
  • Warranty: 90-day Flowtech warranty
  • Fit note: Automatic Transmission, Without A.I.R. Tubes, With Oxygen Sensor- Use Reducer PN[10105FLT] For 2.5 in. Flange Or PN[10110FLT] For 3 in., Requires A/C Bracket PN[10042FLT], Standard Transmission, Without A.I.R. Tubes, With Oxygen Sensor- Use Reducer PN[10105FLT] For 2.5 in. Flange Or PN[10110FLT] For 3 in., Requires A/C Bracket PN[10042FLT], Without A.I.R. Tubes, With Oxygen Sensor- Use Reducer PN[10105FLT] For 2.5 in. Flange Or PN[10110FLT] For 3 in., Requires A/C Bracket PN[10042FLT]
This product fits the following GMC C2500 Suburban submodels
  • 1982-1986: Base; 8 Cyl 5.0L;
  • 1982-1986: High Sierra; 8 Cyl 5.0L;
  • 1982-1986: Sierra Classic; 8 Cyl 5.0L;
  • 1979-1986: Base; 8 Cyl 5.7L;
  • 1979-1986: High Sierra; 8 Cyl 5.7L;
  • 1979-1986: Sierra Classic; 8 Cyl 5.7L;
  • 1982-1982: Sierra Grande; 8 Cyl 5.0L;
  • 1979-1982: Sierra Grande; 8 Cyl 5.7L;
  • 1980-1980: Base; 8 Cyl 6.6L;
  • 1980-1980: High Sierra; 8 Cyl 6.6L;
  • 1980-1980: Sierra Classic; 8 Cyl 6.6L;
  • 1980-1980: Sierra Grande; 8 Cyl 6.6L;

Product reviews

by , November 16, 2008

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I ordered my headers one day and recieved them about 2 days later. They were easy to install and the fit was an exact match to my truck. The only problem I had was the cheap made gaskets for my headers. After install I had an exhaust leak that I couldn't get rid of.