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Description
65-74 Ford F-100/F-250 Long Tube Header - Black Paint - Flowtech 12540FLTOverview: 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 resistant black paint for a stealthy appearance. Features: Fuel Economy From The Engine Leak Test For Max
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 resistant black paint for a stealthy appearance.
Features:
- Fuel Economy From The Engine
- Leak Test For Max Performance
- Mandrel-Formed Power Plenum
- Leakproof O-Ringed Port Seals
- Include All Mounting Hardware
- Constructed of .049 cold roll flash mild steel tubing
- Precision engineered for fit, performance and economy
Fitment Notes
- 2WD Models Only!
- Will NOT fit 1968-1972 Camper Special gas tanks.
- Stock exhaust system will need to be modified to retain cat. converter
- 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.
- On some models with the C-6 transmission, it may be necessary to bend the linkage arm on the transmission. Bend it 1/2” to 3/4” in towards the transmission and make an adjustment at the steering column. The included instructions will provide more details on this step.
Applications:
| Year | Make | Model | Engine | Fitment Notes |
| 1965-1966 | Ford | F-100 | 5.9L V8 361 CID | Please see above! |
| 1968-1974 | Ford | F-100 | 5.9L V8 360 CID | Please see above! |
| 1965-1967 | Ford | F-100 | 5.8L V8 352 CID | Please see above! |
| 1968-1974 | Ford | F-100 | 6.4L V8 390 CID | Please see above! |
| 1965-1966 | Ford | F-250 | 5.9L V8 361 CID | Please see above! |
| 1968-1974 | Ford | F-250 | 5.9L V8 360 CID | Please see above! |
| 1965-1967 | Ford | F-250 | 5.8L V8 352 CID | Please see above! |
| 1968-1974 | Ford | F-250 | 6.4L V8 390 CID | Please see above! |
Specs:
| Brand | Flowtech |
|---|---|
| Collector Diameter | 3.00 inch |
| Bolt Size | 3/8-16 x 3/4 |
| Emission Code | 4 |
| Engine | Ford Big Block |
| Header Finish | Black Paint |
| Header Style | Long Tube |
| Primary Tube Dia. | 1-3/4 inch |
| Product Type | Headers |
| Tube Material | Mild Steel |
| Warning | California Proposition 65 |
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
4.6 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Gorgeous & so soft!
Size: 50"x60", Color: Olive Green
This is hands down the most beautiful throw I’ve ever had. It’s so soft & luxurious on both sides, which is hard to find. It’s warm but not too warm ,just perfect! I got the olive green & it’s a beautiful shade, not too yellow or muddy. I don’t know why people report shedding issues, I wonder if there were some bad batches? Mine hasn’t shed at all. Just washed it for the first time, came out perfect. No lint at all in dryer screen.
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Reviewed in the United States on March 13, 2026
★★★★★ 5
For a luxurious throw,
Size: 50"x60", Color: Grey
I originally bought this throw just to have something cozy around the house—and I was immediately impressed with how unbelievably soft it is. After owning (and loving) a lot of blankets, I’ve realized most only have that plush, silky feel on one side. This one is different—it’s soft on both sides, with a weight and drape that feels genuinely luxurious.
The dark gray color is another standout. It looks elevated and expensive, and it’s held up beautifully through multiple washes without losing that silky texture at all. It honestly feels just as soft as the day we got it, which is rare.
But the reason I had to write this review is unexpected.
We’ve been sleep training our almost 1.5-year-old son, and this blanket somehow became part of the routine. It lives in his room, draped over the rocking chair for those long middle-of-the-night wakeups. Over time, he started pulling it down and choosing to sleep on top of it… on the floor.
We couldn’t tell if he preferred the floor—or the blanket.
So I tried something: I put the throw on his bed.
And just like that… he started sleeping in his bed.
Apparently, this blanket is the key to sleep training.
If you’re looking for something soft, durable, and genuinely cozy, this is already a great buy. But if you happen to have a toddler resisting bedtime… this might just be your secret weapon too.
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Very soft. Wash only on gentle cycle in cold water and low tumble dry. Fabulous blanket.
Size: 50"x60", Color: Orange
So far so good. It was a little sheddy at first but then I washed it and it was fine. It is super soft even after being washed twice. Several people have commented on how soft it is and stated they thought it was a Minky couture. I washed it on gentle cycle in cold water and dried it on gentle low tumble dry. It does not seem to be shedding now. I washed it a second time and put vinegar in the rinse cycle because supposedly that is supposed to help bind the fibers or something. Still seems to be not shedding. It's probably the softest blanket I have every owned. When I wash it, I will continue to wash it on gentle in cold water and dry on either gentle low tumble dry r just air fluff. I read the heat good make the fibers loose and cause more shedding. If anything changes, I will update.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
All time favorite
Size: 50"x60", Color: Orange, Size: 50"x60", Color: Orange
It is the best blanket I have ever had. It doesn’t shed, it stretches, it is unbelievably soft and cozy, and my cats cannot snag it no matter how hard they try!! I love it. It is also the perfect Universoty of Texas burnt orange shade!
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Reviewed in the United States on May 12, 2026
★★★★★ 4
Quality of fabric may be less plush.
Size: 50"x60", Color: Tan
Very soft and plush blanket, although it not as thick and heavy as previously purchased in another color (same brand) it’s still a nice blanket.
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Reviewed in the United States on May 7, 2026