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

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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: 79412790137

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4.5 ★★★★★
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MK
Battle Creek, US
★★★★★ 5
Amazing for quality and price
Size: 10 Inch, Unit Count: 100
Love these for the price! Normally I get Walmarts off brand but this is so much better quality and delivery right to my door! Love how sturdy and leakproof they are and ease of use for party friendly events or everyday use; very versatile!
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Reviewed in the United States on April 7, 2026
E
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Emari
Lowell, US
★★★★★ 5
Great value!
Size: 10 Inch, Unit Count: 372.0, Size: 10 Inch, Unit Count: 372.0
Nice paper plates! They’re sturdy enough to hold two fairly heavy sweet potatoes safely in one hand, they have a waxy layer so liquid and gravy don’t soak into the plate. The design is nice. For the price and the quantity alone, I’ll keep ordering these!
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Reviewed in the United States on April 17, 2026
M
Verified Purchase
Michael sweet
Phoenix, US
★★★★★ 4
Great for the money
Size: 10 Inch, Unit Count: 100, Size: 10 Inch, Unit Count: 100
It's really nice. A little shorter than the actual size listed.
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Reviewed in the United States on May 29, 2026
I
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Ilda Espana
Whiting, US
★★★★★ 5
Sturdy and good price
Size: 10 Inch, Unit Count: 44
These plates a wide and sturdy. We use them everyday at home to minimize dirty dishes which makes cleaning really easy. We’ve had even stew on them which can be very soupy and they don’t leak and they don’t get soggy. It’s also a good price point for the amount of plates it comes with. Good for everyday use or for hosting as well
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Reviewed in the United States on April 3, 2026
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Ana Tagoai
Massapequa, US
★★★★★ 5
Sturdy, Strong, and Leakproof
Size: 10 Inch, Unit Count: 100
Come on now, its paper plates, it means i don’t have to do dishes. Their sturdy, leakproof, and has a cute design. Good for parties and everyday use. Holds a lot, inexpensive compared to name brand, i would buy them again.
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Reviewed in the United States on March 30, 2026

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