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Doug's Headers D755Y-B Tri-Y Header, 1-3/4 In, 73-78 Oldsmobile, Blk

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#447D755YB

Doug's Headers D755Y-B Tri-Y Header, 1-3/4 In, 73-78 Oldsmobile, Blk

Name: Doug's Headers D755Y-B Tri-Y Header, 1-3/4 In, 73-78 Oldsmobile, Blk
Brand: Doug's Headers
SKU: 447D755YB
Price: 718.47 USD
Availability: InStock

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Finish:

Painted

Ceramic Coated

$718.47

/set

Factory Shipped

$798.30

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Product Summary

Tri-Y Header Tube Type, Standard Flange Style, Steel

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Key Specs

MFG. Part #	D755Y-B
Header Tube Type	Tri-Y
Flange Style	Standard
Primary Tube Diameter	1-3/4"
Material Type	Steel

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Need To Know

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855.313.9176

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Doug's Headers D755Y-B Details

Doug's 2/4 WD TRUCK HEADERS Tri-Y Hi-Temp Black Coated Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's 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. Doug's 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 isfinished with a Hi-Temp Black Coating

Doug's Headers D755Y-B 1 3/4" Tri-Y Header Olsmobile Motor Home 455 73-78 Hi-Temp Black Coating

Doug's Headers D755Y-B 1 3/4" Tri-Y Header Olsmobile Motor Home 455 73-78 Hi-Temp Black Coating

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Aeromotive & PerTronix Black Friday 10% Off Sale

Black Friday Savings Are Here! From November 1 2026 through November 30 2026, save 10% on all Aeromotive and PerTronix products, including top performance brands like Doug's Headers, Taylor Cable, and JBA Performance Exhaust. Whether you're upgrading your fuel system, ignition components, headers, spark plug wires, or exhaust setup, this limited-time offer makes it easy to get premium performance parts at a great price. No coupon required, just shop qualifying Aeromotive and PerTronix brands and enjoy instant savings all month long.

Guides & Documents

Headers Installation Instructions (447D755YB)

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++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.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Doug's Headers D755Y-B Specifications

KEY SPECS
MFG. Part #	D755Y-B
Brand	Doug's Headers
Header Tube Type	Tri-Y
Flange Style	Standard
Primary Tube Diameter	1-3/4"
Material Type	Steel
Color	Black
Weld-Up	No
Collector Diameter	3 Inch
Finish	Hi-Temp Black
Hardware Included	Yes
Gasket(s) Included	Yes

GENERAL
Sold in Quantity	Pair
GTIN Code	694342543013

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Questions & Answers

1 Question • 1 Answer

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Would these headers fit my 1968 Oldsmobile delmont 88? its NOT a delta 88

by Zack

• 8 years ago

1 answer

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Fitment

1973-1974 GMC Transmode

455 Oldsmobile Big-Block V8

1968-1971 Oldsmobile 442

455 Oldsmobile Big-Block V8

1968-1976 Oldsmobile 98

455 Oldsmobile Big-Block V8

1971-1976 Oldsmobile Custom Cruiser

455 Oldsmobile Big-Block V8

1968-1976 Oldsmobile Cutlass

455 Oldsmobile Big-Block V8

1975-1976 Oldsmobile Cutlass Salon

455 Oldsmobile Big-Block V8

1971-1976 Oldsmobile Cutlass Supreme

455 Oldsmobile Big-Block V8

1976 Oldsmobile Cutlass Tiara

455 Oldsmobile Big-Block V8

1968 Oldsmobile Delmont 88

455 Oldsmobile Big-Block V8

1968-1976 Oldsmobile Delta 88

455 Oldsmobile Big-Block V8

1965-1966 Oldsmobile Dynamic 88

455 Oldsmobile Big-Block V8

1970-1972 Oldsmobile F85

455 Oldsmobile Big-Block V8

1968-1976 Oldsmobile Toronado

455 Oldsmobile Big-Block V8

1968-1975 Oldsmobile Vista Cruiser

455 Oldsmobile Big-Block V8