$108 Off

Doug's Headers D318-SS 78-87 G Body BBC 304SS Long Tube Headers

$108 Off

#447D318SS

Doug's Headers D318-SS 78-87 G Body BBC 304SS Long Tube Headers

Metallic Ceramic Thermal Barrier Coating (MCTBC), which is polished with a vibratory finishing process that not only produces a high-luster aluminum appearance, but also compresses and activates the coating, which increases the surface hardness.
The finish is 60 percent more corrosion resistant than an unpolished surface, easy to maintain, and will last for years under normal operation conditions

$1,081.63

/pair

Factory Shipped

$1,189.79

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Product Summary

Long Tube Header Tube Type, Standard Flange Style, Raw

Metallic Ceramic Thermal Barrier Coating (MCTBC), which is polished with a vibratory finishing process that not only produces a high-luster aluminum appearance, but also compresses and activates the coating, which increases the surface hardness.
The finish is 60 percent more corrosion resistant than an unpolished surface, easy to maintain, and will last for years under normal operation conditions
MCTBC also protects and extends the life of headers by creating a thermal barrier that significantly lowers under hood temperatures and protects the substrate metal from thermal fatigue
Hi-Temp black coating is an affordably priced alternative to their MCTBC. This finish provides good corrosion and heat protection when compared to many of the "cheaper" header finishes being applied by our competitors
Raw steel is available for individual customizing

See more details

Key Specs

MFG. Part #	D318-SS
Header Tube Type	Long Tube
Flange Style	Standard
Primary Tube Diameter	2"
Material Type	304 Stainless Steel

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Doug's Headers D318-SS Details

Doug's Headers has long been recognized of as one of the premiere exhaust header manufacturers in the performance industry. Since1958, they have been producing high-quality, hand-built, mandrel-bent exhaust headers. Each and every header is tuned with the proper tube size and length to efficiently remove all of the exhaust from each cylinder, reducing pumping losses, and resulting in dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles that they are intended to fit and are re-checked numerous times during the design and manufacturing process. Their designs include mid-length headers, Tri-Y headers, and long tube headers, plus manifold replacement headers.

Their headers come with all the necessary mounting hardware, collector reducers or connector pipes, premium extra-thick gaskets, and detailed installation instruction sheets. The gaskets are rated up to 1100 degrees F, pressures to 3700 psig (255 bar), and are designed for an exact port match with their headers.

Metallic Ceramic Thermal Barrier Coating (MCTBC), which is polished with a vibratory finishing process that not only produces a high-luster aluminum appearance, but also compresses and activates the coating, which increases the surface hardness
The finish is 60 percent more corrosion resistant than an unpolished surface, easy to maintain, and will last for years under normal operation conditions
MCTBC also protects and extends the life of headers by creating a thermal barrier that significantly lowers under hood temperatures and protects the substrate metal from thermal fatigue
Hi-Temp black coating is an affordably priced alternative to their MCTBC. This finish provides good corrosion and heat protection when compared to many of the "cheaper" header finishes being applied by our competitors
Raw steel is available for individual customizing

Application

1978-1981 Buick Century

1978-1983 Buick Regal

1978-1987 Chevrolet El Camino

1978-1983 Chevrolet Malibu

1978-1987 Chevrolet Monte Carlo

1978-1987 GMC Caballero

1982-1986 Pontiac Bonneville

1978-1980 Pontiac Grand Am

1978-1981 Pontiac Grand LeMans

1978-1987 Pontiac Grand Prix

1978-1981 Pontiac LeMans

Specs

304 Stainless Steel

16 Gauge

2.0" Primary Tubing Diameter

3.5" Collector Port Diameter

Guides & Documents

Headers Installation Instructions (447D318SS)

Warranty Information

Doug's Headers warrants that their products will be free from defects in material and workmanship for a period of 1 year. The use of header wrap voids this warranty, and rust is not covered under this warranty.

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

WARNING:

Cancer and Reproductive Harm – www.P65Warnings.ca.gov

CARB warning

Doug's Headers D318-SS Specifications

KEY SPECS
MFG. Part #	D318-SS
Brand	Doug's Headers
Header Tube Type	Long Tube
Flange Style	Standard
Primary Tube Diameter	2"
Material Type	304 Stainless Steel
Weld-Up	No
Collector Diameter	3-1/2 Inch
Finish	Raw
Hardware Included	Yes
Gasket(s) Included	Yes
Collector Reducers Included	Yes
Collector Reducer Exit Diameter	2.5"
Collector Attachment Type	3-bolt flange

GENERAL
Sold in Quantity	Pair
GTIN Code	694342557560
Notes	Must use stock small block frame stands and motor mounts.
Tuned	No
Crossover Pipe Included	No
Gaskets Included	Yes
Transmission Mount Included	No
Catalytic Converter(s) Included	No
Bolts Studs Included	Yes
Motor Mounts Included	No

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