SKU: 79412790137

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

Sale price$263.23 Regular price$292.48
Save 10%

Pay in installments of $73.12 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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: 79412790137

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 28 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
B
Verified Purchase
Brandon
Bozeman, US
★★★★★ 5
Works for me
Color: Picotonic Shot
My skin loves this stuff. I haven’t had a pimple since I started using it and my skin looks more even and it’s fading red spots. I highly recommend giving it a try!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
T
Verified Purchase
TVann
New York, US
★★★★★ 4
A bit sticky but tolerable
Color: Picotonic Shot
I have both Dr. Melaxin peel shots in black and white rice and saw immediate improvement in the removal of tiny blackheads trapped in tight pores on my nose and around my lip line. It might honestly not get in very deep but it at least helped my skin, everyone is different. I thought my face could never be that improved by anything other than squeezing the crap out of my face and still getting nowhere. So I thought I'd try more of the product line. With this particular product I'm still too new to judge much but on my particular skin it is a bit sticky so I'll use it at night. I wash with the Dr. Melaxin Melting Cleaser, the Cactus toner, then the Dr.Melaxin Cemenrete Cyano Pink Spicule Serum and then this product. I'm 57, I don't have acne issues but I do have a few hyperpigmentation spots if like to fade out a bit if possible and just improve the overall cleanliness and look of my skin. Nothing is a miracle but it's been a noticable improvement so far. I give it 4 stars primarily due to it being kind of sticky on me. One drop goes a long way FYI.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
L
Verified Purchase
LJ
Carnegie, US
★★★★★ 5
It works!
Color: Picotonic Shot
Love this product!!! I have been using it about 10 days now, and the brown aid spots on my face are down by half, I am absolutely amazed! I did not take before and after pictures, just because I was waiting for it to work on the wrinkles, I had no idea it would work on the brown spots!! Highly recommend this product!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
M
Verified Purchase
MeghanS
Dallas, US
★★★★★ 5
My second bottle!!!
Color: Picotonic Shot
Wow this stuff really evened out my skin tone. My face looks brighter and tanner which I need and the best part is I don't have to go into the sun to do it. People have asked me if I just got back from vacation bc my skin tone. It gives a nice glow as well. This is my second bottle
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 3
Burns
Color: Picotonic Shot
Not for rosacea
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026

recommand products