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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
4.3 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 4
Great Pillows, But Made for Taller People
Clearly these pillows are high end, very well-made pillows that will last for, dare I say, decades, and they are supportive for the neck and spine... for some people. I got the set of two, one for myself and one for my husband. I am 5'4", about 165lbs, and he is 6'2" about 240lbs. So there is a big difference in size between us.
The pillows arrived in a very small but high quality box, each rolled separately, and I thought for sure that they would take a while to roll out, fluff up, and unwrinkle, the way our bed and other pillows did. But that wasn't the case at all. These pillows immediately fluffed up and were usable with not a single wrinkle (see photos). The silk gray cases that come with them were also in no way wrinkled and fit like a glove. They were a little difficult to situate for me (the cases) because they must go on a certain way (my husband wants me to tell y'all that he got it right the first time). It took me three tries. But once they were on, they looked beautiful and the pillows felt very soft with them on.
Now, that said, it was clear the moment I laid on it that it's made for someone taller, or rather, with a longer neck. When I lay on it, my head does not land on the center of the pillow where the bump is, where it's supposed to cradle my neck. My head instead lays directly on that bump, cocked up with my neck kinked. That's also because *I* am a side sleeper. Now if I lay on my back, my head lays a little more in the center. That is the only way this pillow slightly works for me. If you read the "instructions," it explains that there is a section for your head when you're laying on your back (the center dip) and a section for when you're on your side (the edges). Either way is too high for me. My neck isn't long enough. In order to get it into the correct position, I have to stretch it unnaturally. When I lay naturally, my neck is bent and kinked and hurts more in the morning than ever before.
The feel of it, putting aside its side and dimensions, is very soft to the touch but also quite firm at the same time. It's not the kind of memory foam that takes a while to bounce back. It's bounces back immediately. It's very springy.
The only way I can use this pillow is if I spin in around to keep the cervical support bump at the top and just lay over the flat portion, making it more like a regular pillow. It's still too high and stiff for me, but it's better.
Now for my husband (6'2"), this pillow works great! He's a back sleeper and it really supports his neck. And he does sometimes lay on his side, and apparently it's supports his neck then too. His neck is long enough to reach that edge section for side sleepers and the center supportive dip for back sleepers. He loves it! He says, his neck feels great in the morning and it's his new favorite pillow.
When I got this pillow set, it was listed at $340, and he said that it was not worth that price. But it is now listed at $169, and he's saying that is a much more reasonable price. I personally wouldn't pay that, but that's because the pillow doesn't work for me. I stand by my statement that these pillows are for taller people (or people with longer necks). But for him, he would pay it. I wish it worked for me. I'm a bit jealous, to tell you the truth.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Finally, a pair of pillows that look good on the bed and feel good on the neck.
As much as I like the comfort and support of a cervical neck pillow, they usually have a strange ufo-type look and are usually quite small. It's fine for use, but they are not a great look on the bed. I wanted something more welcoming and full-looking with the support of a c-pillow. This set actually met my hopes and needs.
I love how the pillow has two strengths - firmer on one side, softer on the other. That makes it easy to find the best fit for your own neck shape and support needs. The pillows are large enough that side-by-side on a queen sized bed they look welcoming and like they could probably even have matching cases put on them instead of requiring specialty industrial-looking pillow cases like many do.
Having proper neck support has reduced headaches and neck tension and allows for better sleep!
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Perfect if you're in the right position, not so perfect otherwise
I've been using this for about a week and I like it, but with some caveats. It is shaped so you can only sleep in 2 positions and you can't really move in bed. As long as you are in the correct position, it is really comfortable and provides the best support you can ask for. The problem is if you move around in bed, it turns into a hinderance. With normal pillows, they more or less move with you and are comfortable as you move. This is very specifically great in a single position, but terrible in any other position. If you are able to keep still, this is the perfect pillow for you. If you are like me and roll around too much, its more of a problem for sleeping than a help. I am going to move it over to my couch for napping with, and I think it'll work out far better since the couch isn't really big enough to roll around.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Great quality
Size: Twin, Color: White
This mattress pad is just thick enough without being overly bulky which tends to bunch up after washing. It is super soft and fits twin bed perfectly with just enough padding to add comfort. For a waterproof cover this one is superior to others I've had.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
I’m buying more!
Size: Twin, Color: White
The quality of this product is amazing! It looks fantastic, super fluffy and comfortable, keeps accidents from getting onto mattress. It works so well! And is so worth the cost, I’m buying more for the rest of the beds in our house.
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Reviewed in the United States on May 1, 2026