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- USA
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- USA
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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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:
- 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
4.3 ★★★★★
Based on 987 reviews
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Product Reviews
★★★★★ 4
Difficult to rub in; sweat and water resistant; difficult to wash off
Style: SPF 50, Size: 5 Ounce (Pack of 3)
I've used this spray sunscreen off and on for the past two years and have now decided to only use it after a long and sweaty work out at the gym when I drive home. It is much easier to apply onto the skin on sweaty/wet/moist skin than on dry skin.
It is difficult to apply and rub in on dry skin. One should carefully apply and use a finger to do so to minimize stretching the skin. The positive about this sunscreen is that it is sweat resistant and will not seep or run into your eyes. It is also water resistant; therefore, it is a good sunscreen to use if you are going swimming. However, this makes it difficult to wash off, even in the shower using a face wash or scrub.
I would not recommend this sunscreen for daily use. If you are wearing sunscreen for the purposes of avoiding incidental sun exposure, such as driving to and from places, locally, for fewer than 20-30 minutes, or if you are going for brief walks outside, use a different sunscreen that is friendlier on the skin.
I WOULD recommend this sunscreen to anyone that plans on spending prolonged periods of time out in the sun, including being exposed to direct sunlight. If you are planning a day out at the beach, or going out swimming, exercising outdoors for over 30 minutes, taking a long road trip, or planning to do any activity where you will be in direct sunlight, this is a good sunscreen to use. It will leave a white cast, however, I have confidence that it will provide the adequate protection against UVA-1, UVA-2 and UVB radiation to protect your skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2023
★★★★★ 5
Good sunscreen
Style: SPF 50, Size: 5 Ounce (Pack of 1)
Great alternative to chemical sunscreen, spray is a little patchy and leaves a heavy white residue but that is to be expected. Works well and prevents sunburn so it's a win.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 4, 2025
★★★★★ 3
It works,hard to wash off
Style: SPF 50, Size: 5 Ounce (Pack of 3)
It was hard to rub in. It made skin white. I did not like it. I did not get sunburn. It works!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
★★★★★ 5
Great mineral spray sunscreen
Style: SPF 50, Size: 5 Ounce (Pack of 1)
Purchased multiple times over the years. Great mineral spray sunscreen for sensitive skin. Does leave a white cast but that’s not a huge deal for us. Nice option for kids with sensory issues that hate goopy sunscreen.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 27, 2025
★★★★★ 5
Sun protection without the chemicals!
Style: SPF 50, Size: 5 Ounce (Pack of 3), Style: SPF 50, Size: 5 Ounce (Pack of 3)
I searched for a long time to find safe sunscreen. Prior to having kids, the ingredients in sunscreen (and many other things) were not a concern. Now, I do my best to make sure that anything going on my kids’ skin is as safe as possible. After hours and hours of searching, I finally found this product. It was more than I wanted to spend, but now that I’ve used it I won’t go back! My sons skin is as light as a sheet of paper and he doesn’t like to wear a shirt, so having great sunscreen is important. I use it for both kids as well as my husband and myself.
I do not agree with the reviews stating that this sunscreen is hard to rub in; I find it quite easy!
Just bought another pack for this summer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2023
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