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$715.85
$486.99
Doug's Headers D300Y-R Tri-Y Header 1-5/8 In, 73-87 Chevy Truck, Raw
Doug's Headers D300Y-R Tri-Y Header 1-5/8 In, 73-87 Chevy Truck, Raw

Doug's Headers D300Y-R Tri-Y Header 1-5/8 In, 73-87 Chevy Truck, Raw

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Doug's Headers D300Y-R Tri-Y Header 1-5/8 In, 73-87 Chevy Truck, Raw
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Doug's Headers D300Y-R Tri-Y Header 1-5/8 In, 73-87 Chevy Truck, Raw
Doug's Headers D300Y-R Tri-Y Header 1-5/8 In, 73-87 Chevy Truck, Raw
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Dougs Headers estimates this item will ship on or before August 22nd.
Part # 447D300YR
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 2 business days for Dougs Headers to ship this item.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.

Details

MFG. Part #:
D300Y-R
GTIN Code:
694342506872

Info

Raw Header for Chevy/GMC 2WD & 4WD Trucks & SUV

  • 1/2, 3/4, 1 Ton/ 1500, 2500, 3500 Trucks (73-87) 265-400
  • 1 Ton/3500 Crew, Standard Cab Dually (73-87) 265-400

The Dougs Header you have chosen is raw, not Metallic Ceramic Thermal Barrier Coated (MCTBC) which is the standard finish on all Dougs Headers. The picture you see is the same header with MCTBC which protects and extends the life of headers by creating a thermal barrier that significantly lowers underhood temperatures and protects the substrate metal from thermal fatigue. It also provide corrosion resistance to protect it for years to come.

Please see our online catalog for specific application information.

Every Dougs header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Dougs headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.Every Dougs header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Dougs headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

  • 3/8" Thick machined flanges...no warping
  • CNC mandrel bent tubes... accurate fit & better flow
  • Tri-Y headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy
  • Heavy 16 gauge tubing...longer life
  • Tubes are pre-polished to remove scratches and the header is left unfinished (raw steel) for individual customizing

Application

1987-1991 Chevrolet Blazer 5.7L/350 V8
1987 Chevrolet Blazer 5L/305 V8
1973 Chevrolet Blazer 5L/307 V8
1987-1991 Chevrolet Blazer 6.2L/379 V8
1973-1986 Chevrolet C10 Suburban 5.7L/350 V8
1976-1986 Chevrolet C10 Suburban 5L/305 V8
1973 Chevrolet C10 Suburban 5L/307 V8
1982-1986 Chevrolet C10 Suburban 6.2L/379 V8
1975-1982 Chevrolet C20 Suburban 4.8L/292
1973-1986 Chevrolet C20 Suburban 5.7L/350 V8
1976-1986 Chevrolet C20 Suburban 5L/305 V8
1973 Chevrolet C20 Suburban 5L/307 V8
1982-1986 Chevrolet C20 Suburban 6.2L/379 V8
1976-1980 Chevrolet C20 Suburban 6.6L/400 V8
1973-1986 Chevrolet K10 Suburban 5.7L/350 V8
1976-1986 Chevrolet K10 Suburban 5L/305 V8
1973 Chevrolet K10 Suburban 5L/307 V8
1982-1986 Chevrolet K10 Suburban 6.2L/379 V8
1975-1979 Chevrolet K10 Suburban 6.6L/400 V8
1975-1982 Chevrolet K20 Suburban 4.8L/292
1973-1986 Chevrolet K20 Suburban 5.7L/350 V8
1977-1986 Chevrolet K20 Suburban 5L/305 V8
1973 Chevrolet K20 Suburban 5L/307 V8
1982-1986 Chevrolet K20 Suburban 6.2L/379 V8
1975-1980 Chevrolet K20 Suburban 6.6L/400 V8
1987 Chevrolet R10 Suburban 5.7L/350 V8
1987 Chevrolet R10 Suburban 5L/305 V8
1987 Chevrolet R10 Suburban 6.2L/379 V8
1987 Chevrolet R20 Suburban 5.7L/350 V8
1987 Chevrolet R20 Suburban 6.2L/379 V8
1987-1988 Chevrolet V10 Suburban 5.7L/350 V8
1987-1988 Chevrolet V10 Suburban 6.2L/379 V8
1989-1991 Chevrolet V1500 Suburban 5.7L/350 V8
1989-1991 Chevrolet V1500 Suburban 6.2L/379 V8
1987-1988 Chevrolet V20 Suburban 5.7L/350 V8
1987-1988 Chevrolet V20 Suburban 6.2L/379 V8
1989-1991 Chevrolet V2500 Suburban 5.7L/350 V8
1989-1991 Chevrolet V2500 Suburban 6.2L/379 V8
1975-1978 GMC C15 Suburban 5.7L/350 V8
1976-1978 GMC C15 Suburban 5L/305 V8
1973 GMC C15/C1500 Pickup 5.7L/350 V8
1973 GMC C15/C1500 Pickup 5L/307 V8
1973 GMC C15/C1500 Suburban 5.7L/350 V8
1973 GMC C15/C1500 Suburban 5L/307 V8
1979-1986 GMC C1500 Suburban 5.7L/350 V8
1979-1986 GMC C1500 Suburban 5L/305 V8
1982-1986 GMC C1500 Suburban 6.2L/379 V8
1979-1986 GMC C1500 5.7L/350 V8
1979-1985 GMC C1500 5L/305 V8
1982-1985 GMC C1500 6.2L/379 V8
1979-1980 GMC C1500 6.6L/400 V8
1975-1978 GMC C25 Suburban 4.8L/292
1975-1978 GMC C25 Suburban 5.7L/350 V8
1977-1978 GMC C25 Suburban 5L/305 V8
1978 GMC C25 Suburban 6.6L/400 V8
1973 GMC C25/C2500 Pickup 5.7L/350 V8
1973 GMC C25/C2500 Pickup 5L/307 V8
1973 GMC C25/C2500 Suburban 5L/307 V8
1979-1984 GMC C2500 Suburban 4.8L/292
1979-1986 GMC C2500 Suburban 5.7L/350 V8
1982-1986 GMC C2500 Suburban 5L/305 V8
1982-1986 GMC C2500 Suburban 6.2L/379 V8
1980 GMC C2500 Suburban 6.6L/400 V8
1980-1984 GMC C2500 4.8L/292
1979-1986 GMC C2500 5.7L/350 V8
1979-1986 GMC C2500 5L/305 V8
1982-1986 GMC C2500 6.2L/379 V8
1979 GMC C2500 6.6L/400 V8
1973 GMC C35/C3500 Pickup 5.7L/350 V8
1973 GMC C35/C3500 Pickup 5L/307 V8
1979-1986 GMC C3500 4.8L/292
1979-1986 GMC C3500 5.7L/350 V8
1986 GMC C3500 5L/305 V8
1982-1986 GMC C3500 6.2L/379 V8
1979 GMC C3500 6.6L/400 V8
1973 GMC G35/G3500 Van 5.7L/350 V8
1973-1991 GMC Jimmy 5.7L/350 V8
1977-1987 GMC Jimmy 5L/305 V8
1982-1991 GMC Jimmy 6.2L/379 V8
1975-1979 GMC Jimmy 6.6L/400 V8
1975-1978 GMC K15 Suburban 5.7L/350 V8
1976-1978 GMC K15 Suburban 5L/305 V8
1975-1978 GMC K15 Suburban 6.6L/400 V8
1974 GMC K15/K1500 Pickup 4.8L/292
1973 GMC K15/K1500 Pickup 5.7L/350 V8
1973 GMC K15/K1500 Suburban 5.7L/350 V8
1973 GMC K15/K1500 Suburban 5L/307 V8
1979-1986 GMC K1500 Suburban 5.7L/350 V8
1979-1985 GMC K1500 Suburban 5L/305 V8
1982-1986 GMC K1500 Suburban 6.2L/379 V8
1979-1980 GMC K1500 Suburban 6.6L/400 V8
1979-1980 GMC K1500 4.8L/292
1979-1986 GMC K1500 5.7L/350 V8
1979-1986 GMC K1500 5L/305 V8
1982-1986 GMC K1500 6.2L/379 V8
1979-1980 GMC K1500 6.6L/400 V8
1975-1978 GMC K25 Suburban 4.8L/292
1975-1978 GMC K25 Suburban 5.7L/350 V8
1977-1978 GMC K25 Suburban 5L/305 V8
1975-1978 GMC K25 Suburban 6.6L/400 V8
1973 GMC K25/K2500 Pickup 5.7L/350 V8
1973 GMC K25/K2500 Suburban 5.7L/350 V8
1973 GMC K25/K2500 Suburban 5L/307 V8
1979-1984 GMC K2500 Suburban 4.8L/292
1979-1986 GMC K2500 Suburban 5.7L/350 V8
1982-1986 GMC K2500 Suburban 6.2L/379 V8
1979-1980 GMC K2500 Suburban 6.6L/400 V8
1979-1986 GMC K2500 4.8L/292
1979-1986 GMC K2500 5.7L/350 V8
1982-1986 GMC K2500 6.2L/379 V8
1979-1980 GMC K2500 6.6L/400 V8
1973 GMC K35/K3500 Pickup 5.7L/350 V8
1973 GMC K35/K3500 Pickup 5L/307 V8
1979-1986 GMC K3500 4.8L/292
1979-1986 GMC K3500 5.7L/350 V8
1982-1986 GMC K3500 6.2L/379 V8
1979-1980 GMC K3500 6.6L/400 V8
1987 GMC R1500 Suburban 5.7L/350 V8
1987 GMC R1500 Suburban 5L/305 V8
1987 GMC R1500 Suburban 6.2L/379 V8
1987 GMC R1500 5.7L/350 V8
1987 GMC R1500 5L/305 V8
1987 GMC R1500 6.2L/379 V8
1987 GMC R2500 Suburban 5.7L/350 V8
1987 GMC R2500 Suburban 6.2L/379 V8
1987 GMC R2500 4.8L/292
1987 GMC R2500 5.7L/350 V8
1987 GMC R2500 5L/305 V8
1987 GMC R2500 6.2L/379 V8
1987 GMC R3500 4.8L/292
1987 GMC R3500 5.7L/350 V8
1987 GMC R3500 6.2L/379 V8
1987-1991 GMC V1500 Suburban 5.7L/350 V8
1987-1991 GMC V1500 Suburban 6.2L/379 V8
1987 GMC V1500 5.7L/350 V8
1987 GMC V1500 5L/305 V8
1987 GMC V1500 6.2L/379 V8
1987-1991 GMC V2500 Suburban 5.7L/350 V8
1987-1991 GMC V2500 Suburban 6.2L/379 V8
1987 GMC V2500 4.8L/292
1987 GMC V2500 5.7L/350 V8
1987 GMC V2500 6.2L/379 V8
1987 GMC V3500 4.8L/292
1987 GMC V3500 5.7L/350 V8
1987 GMC V3500 6.2L/379 V8

Notes

  • Doug's Headers D300Y-R 1 5/8" Tri-Y Header Chevrolet Truck Small Block Chevrolet 73-87 Raw Steel
  • Tri-Y Design - Raw Steel
  • Collector: 2 1/2
  • Port Shape: OVL
  • Primary Tube: 1 5/8 - 2
  • legal for off-highway use (exc. in Calif. or states using Calif. emission stds.)
  • Fits D-Port heads incl. ZZ4 crate engines
  • Requires left side A/C bracket P/N H7608
  • Fits most angle plug heads incl. factory Chev. Bow-Tie
  • Primary: 1 5/8 - 2
  • DUALLY
  • Port: OVL
  • Does not fit with bell housing mounts
  • exc. states w/Calif. emission stds
  • Fits D-Port heads
  • Not W/ bell housing mounts
  • Not with bell housing mounts
  • Does not fit W/bell housing mounts
  • use left side AC bracket H7608
  • W/short compressors use stock bracket
  • with A/C
  • For Off-Road Use Only
  • without Catalytic Converter
  • with Column Shift
  • with Floor Shifter

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