SKU: 1345564068

Long Tube Header for 1968-74 Oldsmobile Cutlass 5.7/6.6 - Ceramic Coated - 31150FLT FlowTech

Sale price$263.23 Regular price$292.48
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

Long Tube Header for 1968-74 Oldsmobile Cutlass 5.7/6.6 - Ceramic Coated - 31150FLT FlowTechOverview: 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" 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

Overview:

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" 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.

Features:

  • Fuel Economy From The Engine
  • Leak Test For Max Performance
  • Ceramic Headers
  • Rust And Corrosion Resistance
  • Mandrel-Formed Power Plenum
  • Leakproof O-Ringed Port Seals
  • Include All Mounting Hardware

Application:

Year Make Model Engine Fitment Notes
1968-1969 Oldsmobile 442 6.6L V8 400 CID See Below!
1968-1974 Oldsmobile Cutlass 5.7L V8 350 CID See Below!
1968 Oldsmobile Cutlass 6.6L V8 400 CID See Below!

Fitment Notes:

  • Will not fit column mounted standard or floor mounted automatics or Cutlass Supreme models.
  • Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage.
  • The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.
  • Recommended replacement gasket - Mr. Gasket part# 453
  • Must modify exhaust system to retain catalytic converters.

Specs:

Bolt Size 3/8-16 x 3/4 In.
Brand Flowtech
Collector Diameter 3.00 inch
Emission Code 4
Engine Oldsmobile V8
Header Finish Silver Ceramic
Header Style Long Tube
Primary Tube Dia. 1-3/4 inch
Product Type Headers
Tube Material Mild Steel

Emissions:

  • This part is legal for sale or use on Racing Use Only Vehicles
  • The following vehicles are considered Racing Use Only Vehicles:
    • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.
  • WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 1345564068

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4.8 ★★★★★
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Timothy Listenbee
San Leandro, US
★★★★★ 5
Nice product
Size: Large, Color: Black
Great fit and great material. Warm as well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 9, 2025
P
Verified Purchase
Patrice Kimmerle
Charlottesville, US
★★★★★ 5
Good quality and fit. Lightweight sweater.
Great lightweight sweater. Quality fabric and good fit.
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Reviewed in the United States on December 29, 2025
M
Verified Purchase
MJ
Birmingham, US
★★★★★ 4
Boyfriend liked it, however it has a weird fit
I got this for my boyfriend as he is a fan of this brand's clothes. I got him small and I am glad I did. Although it looks fantastic on him because he is him, the sweater is strangely long and has a weird tough material to it. It is not exactly soft to the touch, and it has a weird stretch. It doesn't feel like other COOFANDY brand turtlenecks he owns, so I was surprised at how stiff the material was compared to those. The color is also a bit more orange in person.
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Reviewed in the United States on December 23, 2023
R
Verified Purchase
R. C. J.
Port Orchard, US
★★★★★ 5
Ribbing & AComfortable Fit
I stumbled onto this brand as the sizes & sizing were very accurate. The ribbed feature is a blessing as it masks, hides, conceals stains & or body imperfections. I'm a 63 year old grandpa who greets outside in the Midwest at church 50 weeks a year. The warmth, the longer sleeve's and the high & roll up, roll down turtle neck is super cozy. The value is, it looks more expensive than it actually was, I have already ordered another in black. I am 5'8 298# with a 63 inch chest 48 inch waist fits with room to spare.
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Reviewed in the United States on January 23, 2024
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barbara carreno
Omaha, US
★★★★★ 5
Good 👍
Muy bonito igual ala foto
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Reviewed in the United States on May 12, 2026

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