1981 GMC Jimmy Exhaust Header Parts

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Hedman
  • Black Long-Tube Headers For 67-91 GM 4WD Trucks/SUVs with 283-400
  • Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110 Power Steering: Yes Auto Transmission - Column: Yes Auto Transmission - Floor: Yes Manual Transmission - Column: Yes Manual Transmission - Floor: No Footnotes: (1) Without smog injection or injection heads. Footnotes: (121) Must modify rotary A/C bracket. Footnotes: (47) Some vehicles may encounter clutch shaft interference when cross shaft location is located under or behind the driver's side rear exhaust port. Use 69092 without A.I.R. Use 69093 with A.I.R. Order Elite 69892. Footnotes: (6) Modification to stock exhaust required to retain catalytic converter. Footnotes: (230) This model is recommended for use with lift kits. Emissions Notes: RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles. Y-Pipe Included:No with EGR:No with A.I.R. System:No Package Contents:Set of Headers, mounting hardware and gaskets Installation Hardware Included:Yes Replacement Gasket:27500 Cylinder Head:Stock Profile Heads Quantity:Sold as a pair. Motor Mounts Included:No Crossover Pipe Included:No Catalytic Converter(s) Included:No Collector Bolts Included:Yes Catalog Code:HED Weld-Up:No Tuned:No Primary Tube Gauge:18g Primary Tube Diameter (in):1.625 in. Mounting Hardware Included:Yes Header Material:Mild Steel Header Finish:BLACK MAXX Satin Black Ceramic-Metallic Cylinder Head Port Shape:Round Variations:69230, 69830 Tube Size:1-5/8 in. Tube Material Thickness:18g Tube Length:Long Tubes Tube Diameter:1-5/8 in. Tube Design:LONG TUBES Reducer Outlet Size:2-1/2 in. Power Steering:Yes Port Shape:Round Material:Mild Steel Manual Transmission - Floor:Yes Manual Transmission - Column:Yes Header Port Shape:Round Replacement Head Flange Gasket:27500 Flange Style:Standard Finish Type:BLACK MAXX- Black Ceramic-Metallic Coating Finish:BLACK MAXX Satin Black Ceramic-Metallic Exhaust System Dia:2-1/2 in. Notes :67-91 GM 3/4, 1 Ton Truck, SUV 283-400 4WD Collector Style:Ball and Socket Style (Gasketless) Collector Size:3 in. Automatic Transmission - Floor:Yes Automatic Transmission - Column:Yes Air Conditioning:Yes Reducers Included:Yes Header Style:Long Tube Gasket Or Seal Included:Yes Collector Attachment:3 in. Flange Thickness:0.25 in. Bolts/Studs Included:Yes Header Construction:Standard-Duty E.O. #:No Contents:headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware Title:HEDMAN HEDDERS CHEVY PU SMALL BLOCK 4WD- BLACK MAXX California Proposition 65:WARNING: Cancer & Reproductive Harm. For more info visit www.P65Warnings.ca.gov Collector Diameter:3 in. Emissions Notes:NOT LEGAL FOR STREET USE ON '75-LATER MODEL YEARS! Legal for off-road use only. Tube Style:Long Tubes
  • Standard-Duty, Black Ceramic Coated Long Tube Headers For 1967-87 CHEVY/GMC 4WD (only) 1/2 to 3/4 Ton Pick-Up Truck, Blazer and SUV; 283-400 SB Chevy Without A.I.R. (Centered Engine Chassis Only); 1-5/8 in. Tube; 3 in. Ball/Socket Collector
  • Product Attributes:
    • California Proposition 65: Warning: Cancer & Reproductive Harm. For More Info Visit Www.p65warnings.ca.gov
    • Header Port Shape: Round
    • Quantity: Sold As A Pair.
    • with A.I.R. System: No
    • Cylinder Head: Stock Profile Heads
    • Tuned: No
    • Cylinder Head Port Shape: Round
    • Header Style: Long Tube
    • Manual Transmission - Column: Yes
    • Finish: Black Maxx Satin Black Ceramic-metallic
    • Flange Style: Standard
    • Collector Bolts Included: Yes
    • Bolts/Studs Included: Yes
    • Automatic Transmission - Floor: Yes
    • with EGR: No
    • Tube Material Thickness:
      • 16g
      • 18g
    • Tube Diameter: 1-5/8 In.
    • Automatic Transmission - Column: Yes
    • Package Contents: Headers, Ball And Socket Reducers (exhaust Adapters), Gaskets, Mounting Hardware
    • Reducer Outlet Size: 2-1/2 In.
    • Tube Size: 1-5/8 In.
    • Port Shape: Round
    • Tube Length: Long Tubes
    • Manual Transmission - Floor: Yes
    • Collector Diameter: 3 In.
    • Tube Style: Long Tubes
    • Variations: 69230, 69830
    • Collector Size: 3 In.
    • Header Finish: Black Maxx Satin Black Ceramic-metallic
    • Mounting Hardware Included: Yes
    • Weld-Up: No
    • Collector Attachment: 3 In.
    • Header Fasteners Included: Yes
    • Y-Pipe Included: No
    • Contents: Headers, Gaskets (when Applicable), 3-bolt Exhaust Adapters, Hardware
    • Finish Type: Black Maxx- Black Ceramic-metallic Coating
    • Notes: 67-91 Gm 3/4, 1 Ton Truck, Suv 283-400 4wd
    • Motor Mounts Included: No
    • Primary Tube Diameter (in): 1.625 In.
    • Crossover Pipe Included: No
    • Header Construction:
      • Mild Steel- Standard-duty
      • Standard-duty
    • Replacement Head Flange Gasket: 27500
    • Tube Design:
      • Long Tubes
      • Standard
    • Material: Mild Steel
    • Power Steering: Yes
    • E.O. #: No
    • Exhaust System Dia: 2-1/2 In.
    • Flange Thickness:
      • 0.25 In.
      • 0.3125 In.
    • Air Conditioning: Yes
    • Installation Hardware Included: Yes
    • Reducers Included: Yes
    • Gasket Or Seal Included: Yes
    • Primary Tube Gauge:
      • 16g
      • 18g
    • Header Material: Mild Steel
    • Catalytic Converter(s) Included: No
    • Replacement Gasket: 27500
    • Collector Style: Ball And Socket Style (gasketless)
    • Emissions Notes: Not Legal For Street Use On '75-later Model Years! Legal For Off-road Use Only.
  • Features:
    • Handcrafted, Mild Steel Construction.
    • Long Tube Header Design Provides Excellent Top-End Horsepower and Torque.
    • Ball & Socket Collector Design requires No Gasket, and Allows For More Exhaust System Misalignment than Old School, Gasket-Style Header Collectors
    • Includes All The Necessary Mounting Hardware, Gaskets and Reducers (exhaust adapters)
    • Limted Lifetime Warranty On Construction, Five Year Warranty on Factory-Applied Header Coating!
    • Proud To Say, Made In The USA, Since 1954!
  • Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Chevy trucks for nearly as long. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.

    These BLACK-MAXX coated, LONG-TUBE headers fit 1967-1991 4WD (only) 1/2 and 3/4 ton Chevy Trucks, Blazers and Suburbans, powered by a Small Block Chevy engine (check the application listings for exact fitment). The smooth 1-5/8 in. tube design provides ample exhaust flow to let your truck's 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque.

    Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.

    Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty. These headers have a high temperature, SATIN-BLACK ceramic finish that resists corrosion, and can withstand temperatures up to 1400 degree F. This finish is covered by a 5-year factory warranty, in addition to Hedman's standard lifetime header warranty.


Additional Fitment Information:
Vehicle Transmission Region Fuel Type Drive Type
1981 - GMC Jimmy Manual United States GAS 4WD

Hedman
  • Black Long-Tube Headers For 67-91 GM 4WD Trucks/SUVs with 283-400
  • Air Conditioning: Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110 Power Steering: Yes Auto Transmission - Column: Yes Auto Transmission - Floor: Yes Manual Transmission - Column: Yes Manual Transmission - Floor: No Footnotes: (1) Without smog injection or injection heads. Footnotes: (121) Must modify rotary A/C bracket. Footnotes: (47) Some vehicles may encounter clutch shaft interference when cross shaft location is located under or behind the driver's side rear exhaust port. Use 69092 without A.I.R. Use 69093 with A.I.R. Order Elite 69892. Footnotes: (6) Modification to stock exhaust required to retain catalytic converter. Footnotes: (230) This model is recommended for use with lift kits. Emissions Notes: RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
  • Standard-Duty, Black Ceramic Coated Long Tube Headers For 1967-87 CHEVY/GMC 4WD (only) 1/2 to 3/4 Ton Pick-Up Truck, Blazer and SUV; 283-400 SB Chevy Without A.I.R. (Centered Engine Chassis Only); 1-5/8 in. Tube; 3 in. Ball/Socket Collector
  • Product Attributes:
    • California Proposition 65: Warning: Cancer & Reproductive Harm. For More Info Visit Www.p65warnings.ca.gov
    • Header Port Shape: Round
    • Quantity: Sold As A Pair.
    • with A.I.R. System: No
    • Cylinder Head: Stock Profile Heads
    • Tuned: No
    • Cylinder Head Port Shape: Round
    • Header Style: Long Tube
    • Manual Transmission - Column: Yes
    • Finish: Black Maxx Satin Black Ceramic-metallic
    • Flange Style: Standard
    • Collector Bolts Included: Yes
    • Bolts/Studs Included: Yes
    • Automatic Transmission - Floor: Yes
    • with EGR: No
    • Tube Material Thickness: 16g
    • Tube Diameter: 1-5/8 In.
    • Automatic Transmission - Column: Yes
    • Package Contents: Headers, Ball And Socket Reducers (exhaust Adapters), Gaskets, Mounting Hardware
    • Reducer Outlet Size: 2-1/2 In.
    • Tube Size: 1-5/8 In.
    • Port Shape: Round
    • Tube Length: Long Tubes
    • Manual Transmission - Floor: Yes
    • Collector Diameter: 3 In.
    • Tube Style: Long Tubes
    • Variations: 69230, 69830
    • Collector Size: 3 In.
    • Header Finish: Black Maxx Satin Black Ceramic-metallic
    • Mounting Hardware Included: Yes
    • Weld-Up: No
    • Collector Attachment: 3 In.
    • Header Fasteners Included: Yes
    • Y-Pipe Included: No
    • Contents: Headers, Gaskets (when Applicable), 3-bolt Exhaust Adapters, Hardware
    • Finish Type: Black Maxx- Black Ceramic-metallic Coating
    • Motor Mounts Included: No
    • Primary Tube Diameter (in): 1.625 In.
    • Crossover Pipe Included: No
    • Header Construction: Mild Steel- Standard-duty
    • Replacement Head Flange Gasket: 27500
    • Tube Design: Standard
    • Material: Mild Steel
    • Power Steering: Yes
    • E.O. #: No
    • Exhaust System Dia: 2-1/2 In.
    • Flange Thickness: 0.3125 In.
    • Air Conditioning: Yes
    • Installation Hardware Included: Yes
    • Reducers Included: Yes
    • Gasket Or Seal Included: Yes
    • Primary Tube Gauge: 16g
    • Header Material: Mild Steel
    • Catalytic Converter(s) Included: No
    • Replacement Gasket: 27500
    • Collector Style: Ball And Socket Style (gasketless)
    • Emissions Notes: Not Legal For Street Use On '75-later Model Years! Legal For Off-road Use Only.
  • Features:
    • Handcrafted, Mild Steel Construction.
    • Long Tube Header Design Provides Excellent Top-End Horsepower and Torque.
    • Ball & Socket Collector Design requires No Gasket, and Allows For More Exhaust System Misalignment than Old School, Gasket-Style Header Collectors
    • Includes All The Necessary Mounting Hardware, Gaskets and Reducers (exhaust adapters)
    • Limted Lifetime Warranty On Construction, Five Year Warranty on Factory-Applied Header Coating!
    • Proud To Say, Made In The USA, Since 1954!
  • Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Chevy trucks for nearly as long. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.

    These BLACK-MAXX coated, LONG-TUBE headers fit 1967-1991 4WD (only) 1/2 and 3/4 ton Chevy Trucks, Blazers and Suburbans, powered by a Small Block Chevy engine (check the application listings for exact fitment). The smooth 1-5/8 in. tube design provides ample exhaust flow to let your truck's 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque.

    Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.

    Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty. These headers have a high temperature, SATIN-BLACK ceramic finish that resists corrosion, and can withstand temperatures up to 1400 degree F. This finish is covered by a 5-year factory warranty, in addition to Hedman's standard lifetime header warranty.


Additional Fitment Information:
Vehicle Transmission Region Fuel Type Drive Type
1981 - GMC Jimmy Automatic United States GAS 4WD

FlowTech
  • 1.5 in. Primary Tubing; w/3 in. Collector; Mild Steel; Ceramic Coated;Intended For Race Use Only May Require Clutch Linkage Modification~Does Not Fit w/Angle Plug Heads~Req. A/C Bracket PN[10042FLT]~w/Oxy. Sensor - Use Reducer PN[10110FLT] For 3 in. Flange~Must Modify Stock Exhaust To Retain Cat. Converter
  • Ceramic Header; 1.5 in. Primary Tubing; w/3 in. Collector; Mild Steel; Ceramic Coated;
  • Ceramic Header
  • Product Attributes:
    • Tube Diameter: 1.500 In.
    • Primary Tube Diameter: 1.500 In.
    • WARNING CA Proposition 65: Yes
    • Application: Automotive
    • WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
    • Coated Finish: Metallic Ceramic
    • Port Shape: Round
    • Engine Make/Size: Chevy Small Block (262-400)
    • Tube Direction: Down Swept
  • Features:
    • Fuel Economy From The Engine
    • Leak Test For Max Performance
    • Ceramic Headers
    • Rust And Corrosion Resistance
    • Mandrel-Formed Power Plenum
    • Leak-proof O-Ringed Port Seals
    • Include All Mounting Hardware
  • Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16 in. flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat and corrosion resistant metallic ceramic thermal coating that increases exhaust velocity and reduces underhood temps for increased performance.

Additional Fitment Information:
Vehicle Block CC Engine Sub Model CID
1981 - GMC Jimmy V - 8 Cyl 5.0L Street Coupe 305

FlowTech
  • 1.5 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only May Require Clutch Linkage Modification~Does Not Fit w/Angle Plug Heads~Req. A/C Bracket PN[10042FLT]~w/Oxy. Sensor- Use Reducer PN[10105FLT] For 2.5 in Flange
  • Long Tube Headers; 1.5 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;
  • Long Tube Headers
  • Product Attributes:
    • Tube Diameter: 1.500 In.
    • Primary Tube Diameter: 1.500 In.
    • WARNING CA Proposition 65: Yes
    • Application: Automotive
    • WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
    • Coated Finish: Painted
    • Port Shape: Round
    • Engine Make/Size: Chevy Small Block (262-400)
    • Tube Direction: Down Swept
  • Features:
    • Fuel Economy From The Engine
    • Leak Test For Max Performance
    • Mandrel-Formed Power Plenum
    • Leak-proof O-Ringed Port Seals
    • Include All Mounting Hardware
    • Precision Engineered For Fit
  • Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16 in. flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.

Additional Fitment Information:
Vehicle Block CC Engine CID
1981 - GMC Jimmy V - 8 Cyl 5.0L 305
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