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Description
Flowtech Tri-Y Header 1965-1970 Ford 260-289-302 V8 - 12120FLTOverview: Flowtech Headers are the perfect combination of quality and value. These Tri Y style headers fit the popular 1965 1970 Ford 260 289 302 V8 engines. These Tri Y style headers were originally designed for 1965 1966 Shelby GT350 Mustangs with a 289HiPo V8, 4 speed manual transmission, and manual steering. Over the years, Ford enthusiasts have used these headers in dozens of other vehicles to get that classic Shelby sound and performance. See
Overview:
Flowtech Headers are the perfect combination of quality and value. These Tri-Y style headers fit the popular 1965-1970 Ford 260/289/302 V8 engines. These Tri-Y style headers were originally designed for 1965-1966 Shelby GT350 Mustangs with a 289HiPo V8, 4-speed manual transmission, and manual steering.
Over the years, Ford enthusiasts have used these headers in dozens of other vehicles to get that classic Shelby sound and performance.
See Installation Notes for additional information regarding fitment details regarding these headers.
Features:
- Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increases the cylinder scavenging effect and improves engine breathing
- Heavy duty 16-gauge tubing for increased strength and durability
- 1-1/2” diameter primary tubes, 1-3/4” diameter secondary tubes for increased exhaust flow increasing performance and improving throttle response
- 2-1/2” collector for maximum strength and exhaust flow
- 3/8” thick header flange for a leak-free seal and maximum strength
- Premium aluminum header gaskets included
- Available in a high heat resistant black paint or polished finish
Fitment Notes:
- Attempt to install in any other application WILL require some modification
- These headers will not fit vehicles utilizing an FMX, C-6, or AOD automatic transmission
- May not fit some vehicles utilizing a C-4 transmission with 164-tooth bellhousing.
- Those using a 157-tooth bellhousing with require some clearancing on RH side of bell
- Will NOT work on 351W motors. (Due to taller and wider engine dimensions)
- Will not work with GT40-P cylinder heads
- Headers will work with 10" or 10.5" clutch, use of a 1968-newer bellhousing will require clearance on LH side of bellhousing
- 1969-1970 model vehicles may require additional clearance for steering box
- Use of these headers on a non-HiPo model will require extra clearance for clutch linkage
Applications:
| Year | Make | Model | Engine | Fitment Notes |
| 1966-1968 | Ford | Bronco | 4.7L V8 289 CID | C4 Transmission Please See Above! |
| 1968-1970 | Ford | Bronco | 5.0L V8 302 CID | C4 Transmission Please See Above! |
| 1965 | Ford | Custom | 4.3L V8 260 CID | T-10H, T-10M, T-10J, T-10L, C4 Transmissions Please Seee Above! |
| 1965 | Ford | Custom | 4.7L V8 289 CID | T-10H, T-10M, T-10J, T-10L, C4 Transmissions Please See Above! |
| 1966 | Ford | Custom | 4.7L V8 289 CID | T-10Q and C4 Transmissions Please See Above! |
| 1967 | Ford | Custom | 4.7L V8 289 CID | C4 Transmission Please See Above! |
| 1968-1970 | Ford | Custom | 5.0L V8 302 CID | C4 Transmission Please See Above! |
| 1969-1970 | Ford | E-100 Econoline | 5.0L V8 302 CID | C4 Transmission Please See Above! |
| 1969-1970 | Ford | F-100 | 5.0L V8 302 CID | C4 Transmission Please See Above! |
| 1969-1970 | Ford | F-250 | 5.0L V8 302 CID | C4 Transmission Please See Above! |
| 1965 | Ford | Fairlane | 4.7L V8 289 CID | T-10H, T-10M, T-10J, T-10L, C4 Transmissions Please See Above! |
| 1966-1967 | Ford | Fairlane | 4.7L V8 289 CID | C4 Transmission Please See Above! |
| 1968-1969 | Ford | Fairlane | 5.0L V8 302 CID | C4 Transmission Please See Above! |
| 1965 | Ford | Galaxie | 4.7L V8 289 CID | T-10H, T-10M, T-10J, T-10L, C4 Transmissions Please See Above! |
| 1966-1967 | Ford | Galaxie | 4.7L V8 289 CID | C4 Transmission Please See Above! |
| 1968-1970 | Ford | Galaxie 500 | 5.0L V8 302 CID | C4 Transmission Please See Above! |
| 1966-1967 | Ford | LTD | 4.7L V8 289 CID | C4 Transmission Please See Above! |
| 1968-1970 | Ford | LTD | 5.0L V8 302 CID | C4 Transmission Please See Above! |
| 1965 | Ford | Mustang | 4.3L V8 260 CID | T-10H, T-10M, T-10J, T-10L, C4, Toploader Transmissions Please See Above! |
| 1965 | Ford | Mustang | 4.7L V8 289 CID | T-10H, T-10M, T-10J, T-10L, C4, Toploader Transmissions Please See Above! |
| 1966 | Ford | Mustang | 4.7L V8 289 CID | T-10Q, C4, Toploader Transmissions Please See Above! |
| 1967-1968 | Ford | Mustang | 4.7L V8 289 CID | C4 and Toploader Transmissions Please See Above! |
| 1968-1970 | Ford | Mustang | 5.0L V8 302 CID | C4 and Toploader Transmissions Please See Above! |
| 1965-1967 | Ford | Ranchero | 4.7L V8 289 CID | C4 Transmission Please See Above! |
| 1968-1970 | Ford | Ranchero | 5.0L V8 302 CID | C4 Transmission Please See Above! |
| 1968-1970 | Ford | Torino | 5.0L V8 302 CID | C4 Transmission Please See Above! |
Specs:
| Brand | Flowtech |
|---|---|
| Bolt Size | 3/8-16 x 3/4 |
| CARB (California) Compliant | No |
| Collector Diameter | 2.50 inch |
| Header Finish | Polished |
| Header Style | Tri-Y |
| Material | Mild Steel |
| Primary Tube Dia. | 1-1/2 inch |
| Product Type | Headers |
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
4.7 ★★★★★
Based on 934 reviews
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Product Reviews
★★★★★ 4
Perfect Keto-Friendly Gum, Clean Ingredients & Great Flavor!
Flavor Name: Spearmint, Size: 55 Count (Pack of 1), Flavor Name: Spearmint, Size: 55 Count (Pack of 1)
I’ve tried so many sugar-free gums, and this is by far the best option for anyone following a keto or strict carnivore lifestyle. It’s aspartame-free, has clean ingredients, and doesn’t leave that artificial aftertaste that most gums have. The spearmint flavor is fresh and long-lasting, and I love that it helps satisfy cravings without adding sugar or unnecessary carbs.
The texture stays soft longer than other brands, and the resealable bag is super convenient for keeping in the car, gym bag, or at work. If you’re looking for a healthier gum that fits perfectly into a low-carb, keto, or carnivore-focused routine, this is definitely the one to buy. Four stars only because the flavor only lasts about a minute.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Good alternative to traditional gums- no aspartame no artificial coloring.
Flavor Name: Spearmint, Size: 55 Count (Pack of 1)
Love this gum, no aspartame, no artificial coloring and good taste, you get used to chewing it for a long time, the taste goes away little faster than traditional gums but I don't care
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Great Xylitol Chewing Gum!
Flavor Name: Spearmint, Size: 55 Count (Pack of 3), Flavor Name: Spearmint, Size: 55 Count (Pack of 3)
This review is for PUR Gum | Aspartame Free Chewing Gum | 100% Xylitol | Natural Spearmint Flavored Gum, 55 Pieces (Pack of 3). I got 2 of the 3-pack at the time because it was cheaper to do so than to get a 6-pack. Of course, the next day the 6-pack was cheaper lol. Anyway, this is great xylitol gum and not overly expensive like Zellie’s. I take 2 (which is one serving meaning 2g of xylitol) after “most” meals because it’s supposed to be good for my oral health. I chew one piece at a time for a couple minutes to prolong the sweet flavor instead of popping both into my mouth together. I like chewing these because they don’t harden up like some gums do. They stay soft throughout and I often forget and chew them for 15-20 minutes at a time. Anyway, I did the math and compared the PUR gum to other 100% xylitol gums out there and this one was a clear winner to me for the same benefits. I would totally recommend this gum and I like that it’s aspartame free! I’d give it a 5.0/5.0 - 03/20/2026.
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Reviewed in the United States on March 20, 2026
★★★★★ 3
Great taste but cannot use
Flavor Name: Spearmint, Size: 55 Count (Pack of 1)
First time trying for dental care. Really enjoy the taste only drawback taste doesn’t last long. However, it’s better than other sugar substitutes which my stomach does not like.
Glad I signed up for the three pack sub. Great product! Recommend.
May 16, 2026 Update: Unfortunately I cannot use this product after the initial trial every time I chew on these i experience stomach issues so the three pack I purchased will need to find someone that can use them or throw out.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Powerful lasting peppermint flavor & the xylitol fights plaque!
Flavor Name: Spearmint, Size: 55 Count (Pack of 6)
The gum has a powerful peppermint taste – very refreshing. The flavor lasts a long time. The main reason that I bought this gum is because it has 100% xylitol. Xylitol helps fight plaque buildup. I have only had the product one day, so I can't say that it works, but I read many reports before I bought the gum that xylitol is excellent for fighting plaque buildup. It also has no sugar. It's vegan and it has only five calories per two pieces. I have so far only chewed one piece at a time. One piece seems plenty for me. I've read that people need from six to ten grams of xylitol per day to effectively fight plaque. So, this gum needs to be chewed accordingly. Many people chew after every time they eat. I am happy with this purchase.
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Reviewed in the United States on May 12, 2026