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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
4.7 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Spikey Balls Outlast Both Dogs!
Size: 4.5 Set of 4
Our two golden-doodles have destroyed many of the chew toys I foolishly invested in. I used to measure their lifespan and durability in a matter of minutes. Shredding toys seemed their delight and specialty. Squeakers were often attacked with spectacular ferocity as if they were tests of canine ingenuity to find ways to get to, swallow, or otherwise destroy the squeaker mechanism. That is until they met these spikey dog balls with attitude. Our girls delight in chasing them down when thrown and have wearied themselves trying to figure out a way to chew through them. These balls have broken the household record for longevity. They've taken a licken and continue to squeak and delight our girls. Which delights us! Safe, great value for the money, cute, and the color has proven tough through heat, rain, lots of aggressive chewing.
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Reviewed in the United States on October 3, 2025
★★★★★ 3
Immediately rolled up under the sofa!
Size: 4.5 Set of 4
I was looking for toys that were durable, that our GSD puppy would like, and that would specifically NOT roll under the sofa every time he swatted at it because I’m tired of moving the couch every 5 minutes to retrieve another toy. This toy went under the couch within 5 minutes of opening the package.
He doesn’t seem to enjoy playing with it as much as he does a regular tennis ball, it’s easier to throw far outside IMO (my husband doesn’t notice a difference). It’s not hard or soft, it’s kind of a combination of both with the knobby bumps on the outside. I speculate the bumps are part of what he doesn’t enjoy playing with. He is able to pick it up and carry it easy enough and when he does it squishes just enough for him to carry it, he’s 5 months old by the way. But the bottom line is this will likely become yet another “outside toy” in the sea of outside toys because if not I’ll be constantly fishing it out from under the couch!
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Great find
Size: 4.5 Set of 4
I am actually impressed with these balls. Our dog is a very heavy chewer and literally can tear every toy up within a few minutes. I usually buy tennis looking balls from PetSmart that are a little bigger than an actual tennis ball that has a squeaker and they don't last long. After he runs around squeaking them for about 20 minutes he goes in destruction mode. He loves the squeaker but loves to tear the felt off then the ball is destroyed next. They are at least cheap but not really if he goes them so fast. I have to ration them out. I decided to give these balls a try after reading another review that they are good for heavy chewers. He has been playing with these balls for weeks and they are still going strong. None of them have been destroyed. Granted he would prefer the felt ones but my wallet prefers balls that last.
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Reviewed in the United States on January 1, 2026
★★★★★ 5
loud but in a good way
Size: 4.5"
Love these crazy loud squeeky balls. I bought two a bit too big but the dogs still love them. Yes, they will drive you insane but the dogs love them so much it's worth it watching the pups enjoy the balls. They are strong and safe as long as they aren't too small for your dogs mouth.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Great for aggressive chewers - Great for clean teeth
I never thought these would stand up to my 60lb pittie puppy's chewing. But they are far and away her favorite toy and are holding up beautifully. One squeaker insert bit the dust -- which is not bad since it gives us one silent one. But otherwise they are holding up superbly to her powerful jaws. We have tried a lot of toys. So far, all the "for aggressive chewers" toys have been torn apart within days if we are lucky -- usually it's minutes. But these balls show little-to-no sign of wear. The squeakers are very loud which she loves can get a bit tiresome. So, as I mentioned, having one silent one is a great option. And she really likes the texture. She loves them so much, we bought a second set and will probably buy a third to have in reserve. (We are realistic and don't expect them to last forever.) All I have to say is "where's spiky ball" and she instantly stops what she is doing and goes on the hunt. A great buy!! (NOTE: It's been almost three months and one is just beginning to show some damage. Given that she plays with them non-stop, they've showed amazing durability. And everyone comments on how clean and beautiful her teeth are. I don't brush them or give her dental treats. So it has to be these balls!!)
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Reviewed in the United States on June 23, 2025