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Description
Long Tube Header for 1970-1973 Ford Mustang 351C-4V Black Paint 12118FLT 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 resistant black paint for a stealthy appearance. Features: Improved Exhaust Scavenging for Increased
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:
- Improved Exhaust Scavenging for Increased Performance
- 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
- Will not fit with manual transmissions
- Will not fit C6 transmissions
Fitment Notes:
- Will NOT fit with manual transmissions.
- Will NOT fit C6 transmissions (but fits other Automatic Transmissions).
- 351C-4V engines only!
- WILL fit models with AC, Power Brakes, and Power Steering.
- 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.
Applications:
| Year | Make | Model | Engine | Fitment Notes |
| 1970 | Ford | Fairlane | 5.8L 351C-4V | Please See Above! |
| 1972-1974 | Ford | Gran Torino | 5.8L 351C-4V | Please See Above! |
| 1970-1973 | Ford | Mustang | 5.8L 351C-4V | Please See Above! |
| 1970-1973 | Ford | Ranchero | 5.8L 351C-4V | Please See Above! |
| 1970-1974 | Ford | Torino | 5.8L 351C-4V | Please See Above! |
| 1970-1974 | Mercury | Cougar | 5.8L 351C-4V | Please See Above! |
| 1970-1971 | Mercury | Cyclone | 5.8L 351C-4V | Please See Above! |
| 1970-1974 | Mercury | Montego | 5.8L 351C-4V | Please See Above! |
Specs:
| Brand | Flowtech |
|---|---|
| Bolt Size | 3/8-16 x 3/4 |
| Collector Diameter | 3.00 inch |
| Engine | 351C-4V |
| Header Finish | Black Paint |
| Header Style | Long Tube |
| Primary Tube Diameter | 1-3/4 inch |
| Product Type | Headers |
| Tube Material | Mild Steel |
| Part Number | 12118FLT |
| Warning | California Proposition 65 |
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
4.1 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Great Purchase!
Color: White, Style: Wall Cabinet
Great quality. Easy to put together. Looks great!
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Reviewed in the United States on May 4, 2026
★★★★★ 4
Mounting process could have been easier but still a beautiful cabinet
Color: White, Style: Wall Cabinet, Color: White, Style: Wall Cabinet
Beautiful cabinet seems to be good quality I just keep admiring something so beautiful about the white. The extra hardware is thoughtful.
With some master skills I was able to get it mounted perfect. It was not a breeze but nonetheless I always find a way.
I found the best way to mount this was to hold it against the wall and follow the pre-drilled holes at the bottom to drill the holes into the wall that wasnt that hard
But for the top anchor/screws, the cabinet did not have pre-drilled holes and I was not about to guess !! So I used alien tape to tape the top wood bar to the unit as shown in pic then took the cabinet lined up the bottom holes while holding the cabinet up then I drilled holes through the unit with a small bit just to get the whole going then took it back down then followed the same holes with a bigger bit and it worked for me. It hung level.
It was crazy that the pre-holes were not 16” apart when they could have been. I added extra screws to be able to mount them to a stud I didn’t feel comfortable with it not being mounted to a stud. The screws I had were too long gonna have to get some shorter screws. But it’s up & looks so nice
DO NOT USE 11/32 bit. Don’t even use 5/16. I use 1/4 and kinda ran the drill in a circle to widen the whole and it was the perfect tight fit
All in all I do love the cabinet. Just feel the mounting process could have been instructed more conveniently
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Love it !!!!
Color: White, Style: Wall Cabinet, Color: White, Style: Wall Cabinet
I absolutely love this cabinet. It’s super well-made easy to put together and the space is great. I’ve already received some compliments. Thought it would guests. Come to my home. Just look at how nice it pairs with my bathroom. The handles are sturdy. There’s also a nice tag inside with the company’s name. If you’re looking for a bathroom cabinet, highly recommended this one is well worth it. Love it!!!
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Excellent Cabinet for someone good at mounting a cabinet
Color: White, Style: Wall Cabinet
The cabinet arrived very well packaged with an instruction booklet, hardware, and an Allen wrench. The booklet says you will just need a Phillips screwdriver, but you will also need a drill with an appropriate bit (more on the bit later) to mount the cabinet on the wall.
Assembling the cabinet was simplified by how well the cabinet pieces and hardware were labeled and referenced in the instruction booklet. The holes in all the cabinet parts lined up nicely.
The doors swing on spring loaded pivots. They are not adjustable, but work well and are probably much less expensive than European style hinges. I was concerned that the doors would not line up, but they look fine.
The Magnetic Latch also works well, but the little piece of wood that it mounts on fell off during assembly so I glued it back in place. This was the only problem I had assembling the cabinet. I let the glue dry overnight and mounted the cabinet the next day.
The wood support plate they ship with the cabinet is a great way to hang a cabinet, however I did have some problems using the supplied anchors. I recommend having some other anchors and screws available in case you have similar issues.
Skip this paragraph if you do not care about the details: I mounted the cabinet on drywall. The instructions said to drill 11/32” holes for the supplied plastic wall anchors. I did not have an 11/32” bit so I used a 5/16” bit. Even though my holes were 1/32” smaller than specified, the anchors slid into the drywall very easily without having to tap them. I recommend using a 5/16” bit or even a 9/32” bit instead of the 11/32” they specify. Next I mounted the support plate with the supplied screws, but I could not get the screws tight enough to hold the plate securely in place. It felt like the screws were too small in diameter so I used some slightly larger screws. That worked fine for one of the screws holding the plate and the two lower screws, but the second screw through the plate would not bite and hold the plate firmly. Fortunately I had one HILTI 3/16” hollow wall metal anchor left over from a previous project and was able to get the plate very solidly attached to the wall.
My wife is very pleased with the cabinet. I did have some trouble with the latch and the install so I was tempted to knock off a star, but I think this is a 5-Star item considering the low cost and how well the the cabinet parts aligned with each other.
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Reviewed in the United States on January 20, 2025
★★★★★ 5
Love and amazing for the price!
Color: White, Style: Wall Cabinet, Color: White, Style: Wall Cabinet
Perfect! I'm a renter and didn't want to spend an arm and a leg on something that might not work in the next place so this looked like it would be a good fit. I really wasn't expecting much for the price point but I was VERY pleasantly surprised. It's a great piece.
I love assembling things (I'm an Ikea pro) but this had literally the easiest and most explicit instructions I have ever seen. Every piece is clearly labeled. The hardware comes in a bubble pack, again clearly labeled. Rhe instructions are very clear.
Another thing I appreciated was the mounting mechanism which is a French cleat. It is much easier to level and screw in a cleat than to recruit help and try to hold a cabinet in place and try screwing it in. I'm a fat middle age woman and I had no problem mounting it by myself.
Notice there are no screws visible on the outside. That was a huge selling point for me.
Only con is that for the quality of everything else, the shelves are on the thin side, placing anything substantial would definitely make them bow.
Background is a scrap of peel-and-stick.
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Reviewed in the United States on January 28, 2026