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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
4.8 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Foams well, smells good, rinses off nicely, perfect!
Scent: Eucalyptus, Size: 12 Fl Oz (Pack of 1)
Oh five stars easily! I bought some other brand, starts with an M, but no foam! Nothing! Then I ordered this one hoping it would at the very least be foamy. It is, and it smells wonderful, and it cleans hands perfectly. It also rinses off well. FIVE STAR!
I will be buying all of these! The lavender is probably my favorite scent, The Satsuma & Eucalyptus is excellent too, and I will be ordered others when they are available.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Cleans without any harsh fragrance or residue
Scent: Fragrance Free, Size: 12 Fl Oz (Pack of 1)
I got tired of other overly-scented hand soaps and decided to give this a try. It works well for a quick wash after using the toilet and when you're hands are really dirty. It rinses off easily and quickly. While it's unscented, it does have a smell - it's hard to describe, sort of like a bleach-clean scent but, it definitely does NOT smell like bleach. It just smells "clean."
Since it's in the bathroom, it also gets used to clean up some other adult things. Since it isn't scented and doesn't leave any residue it's perfect for things that are in close contact with sensitive areas.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Smells nice, foams up. Really good.
Scent: Lavender, Size: 64 Fl Oz (Pack of 1)
Good price, got it for a backup in case we run out of the stuff we normally use. It smells pretty good actually.
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Reviewed in the United States on May 24, 2026
★★★★★ 4
Good smelling soap!
Scent: Lavender, Size: 12 Fl Oz (Pack of 1)
Smells great and is gentle on the hands. No artificial colors and no leaks! It smells good and is a good price! The pump works very well, overall am very happy with this soap!
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Reviewed in the United States on February 2, 2026
★★★★★ 5
Must Use FOAMING SOAP BOTTLE for this soap & you will Love it!
Scent: Fragrance Free, Size: 64 Fl Oz (Pack of 1)
I have been using this soap refill for years and love it. I also use the scented versions when this is out of stock and they are not very strong scent. But if you prefer no fragrance, then this is a great soap. Many reviewers are complaining it is watery and thin. YES, IT IS. It is SUPPOSED to be. If you don't know how foaming soap works, you do need a couple pumps of foaming soap but you are using a fraction of the amount of soap you would use (aka WASTE) with standard soap. Have you ever seen your kid pump soap in the bathroom? Not once, or twice, but three or four times? Well, they can do that with this soap and not waste it because it's half air in each pump. It's SUPPOSED to be for foaming hand soap. Don't get fooled by your costly regular or foaming soap. Buy this and have clean hands and SAVE money! My family has very sensitive skin and nobody gets rough, red hands from this soap. No problems.
HIGHLY RECOMMEND THESE FOAMING SOAP DISPENSERS FOR THIS PRODUCT:
https://www.amazon.com/dp/B07PVFXSVC/ref=sbl_dpx_bath-accessories-countertop-soap-dispensers_B07Z8J57J7_0?th=1
UPDATE ON REVIEW (August 2020): I recently just ordered this item and it was delivered with new packaging. I thought it was the same product, but it seems to have additional ingredients now including alcohol. Hm. Need to look closer into this and will update when figure out what has changed.
UPDATE ON INGREDIENTS (October 2020): The new formula is now showing the ingredients. It has changed. A lot. One ingredient that was removed is PHENOXYETHANOL which is GREAT they removed that! However, if they only removed that, then this would be an amazingly safe hand soap (by EWG standards it would be golden). However, it is a completely different soap with a completely different list of ingredients. I will wait until the EWG rates these ingredients before continuing to purchase this. As other reviewers have noted, it does now have "fragrance" in the ingredients - and misleadingly states "(natural)" next to the word fragrance, which means absolutely nothing in terms of what is allowed and what is not. Do your research on what the word "fragrance" means on labels and what could possibly be in your product under that ingredient. In addition it now does have alcohol in it, which some may like, however I don't think soap needs it. If you are washing, you don't need to sanitize anything. It's overkill ingredient - not needed and dries your hands out.
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Reviewed in the United States on August 18, 2020
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