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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 17 reviews
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Product Reviews
★★★★★ 5
Good as expected
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Silver, Set: Without AppleCare+
Came I recently got the Apple 2026 MacBook Air 15-inch with the M5 chip, and honestly it exceeded my expectations. The performance is super fast—everything from everyday tasks to heavier work like editing and multitasking runs smooth without any lag. The battery life is impressive too, easily lasting me all day without needing to charge.
What I really like is how thin and lightweight it feels for a 15-inch laptop, making it easy to carry around while still having a big, beautiful display. The screen quality, sound, and overall build just feel premium, like you’d expect from Apple. Plus, it stays completely silent since there’s no fan, which is a big plus.
Overall, if you’re looking for a powerful, reliable laptop that’s great for both work and everyday use, this one is definitely worth it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
★★★★★ 5
Apple MacBook Air 15-inch (2026): Big Screen, Fast Performance, and Perfect Apple Ecosystem Upgrade
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Starlight, Set: Without AppleCare+, Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Starlight, Set: Without AppleCare+
I just received my 2026 Apple MacBook Air 15-inch, and overall, I’m really impressed. At first, there was a bit of anxiety because the app showed my overnight delivery as being delayed by about a week, but it actually arrived exactly on time, which was a great relief.
The packaging was solid and everything arrived in perfect condition. Setup was quick and easy as expected with Apple products, and I’m officially now fully in the Apple ecosystem—iPhone, iPad, Apple Watch, AirPods, and now MacBook.
The 15-inch screen is definitely a standout. It’s noticeably larger in person compared to the 13-inch, and that extra space makes a big difference for my marketing work, content creation, and anything detail-heavy. It also just feels better for everyday use and personal browsing.
Performance-wise, it’s fast, smooth, and everything runs seamlessly. It integrates perfectly with my other Apple devices, which makes my workflow feel really effortless.
Overall, I’m very happy with it so far and excited to fully customize it and make it my daily driver.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 5
Apple laptop
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Starlight, Set: Without AppleCare+
I’ve been using this MacBook Air for a few weeks now and honestly I’m very impressed with the quality and performance. It’s super lightweight, fast, and the battery lasts all day without any problems. The screen quality is beautiful and everything runs smoothly, even when I have multiple apps open at the same time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Worth the investment
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Sky Blue, Set: Without AppleCare+
I don't usually write reviews, but I recently bought this computer and I'm loving it. I previously had an M2 2023 Macbook Air that I got water in and fried. This essentially does all the same things, but cooler. It also has a bigger screen, which is perfect for me since I do a lot of work on my computer and constantly have a million tabs open. I'm also a student, so there's that. No complaints! The battery life is great and much better than my old computer. The color is a beautiful blue, which I've never seen before and I think is quite unique. I've gotten compliments on it. It also runs much faster and for some reason connects better to my crappy printer! Win all around!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Impressive MacBook Air
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Midnight, Set: Without AppleCare+
Ordered via Prime and the Mac arrived the next day. Setup was easy. The M5 chip flies but my usage is basically routine functions no heavy usage. Everything is speedy. This computer is an upgrade from my 2017 MacBook Pro and a 2020 iMac. Both of those old Macs are still functional. I've been using Macs since the Apple IIC and II GS. Over 35 years ago. The keyboard is one of the best I've used. I loved the 2017 MBP keyboard because if had a great feel. Others since then were not comfortable until this keyboard on the MB Air. Booting up is fast. For me the battery will last for four days before recharging. I really like the Mag Safe charger. Easy on and easy off especially if you happen to forget you're charging and pull the computer away from the connection. Connection just drops off. The touchpad is not as sensitive as others. If I accidentally rest my finger or fingers on the pad it doesn't execute an unwanted command. You have to use a little pressure to execute the task. No problems while typing and having the touchpad sending you off into space somewhere. A great Mac upgrade.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
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