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Description
Flowtech Long Tube Header for 1966-74 Dodge/Plymouth - Black Paint - 13100FLTOverview: 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: Mandrel Formed Power Plenum Leak Test For Max
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:
- Mandrel-Formed Power Plenum
- Leak Test For Max Performance
- Fuel Economy From The Engine
- Constructed of .049 cold roll flash mild steel tubing
- Include All Mounting Hardware
- Leakproof O-Ringed Port Seals
- Precision engineered for fit, performance and economy
Fitment Notes:
- Will not fit with A.I.R. injection pump.
- It may be necessary to raise the automotive column cross shaft linkage by rotating the mounting brackets on the frame and transmission 180º
- Will not fit vehicles with 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 | Notes |
| 1967-1969 | Dodge | Dart | 4.5L V8 273 CID | See Fitment Notes Above |
| 1968-1974 | Dodge | Dart | 5.2L V8 318 CID | See Fitment Notes Above |
| 1968-1973 | Dodge | Dart | 5.6L V8 340 CID | See Fitment Notes Above |
| 1974 | Dodge | Dart | 5.9L V8 360 CID | See Fitment Notes Above |
| 1970-1974 | Dodge | Challenger | 5.2L V8 318 CID | See Fitment Notes Above |
| 1970-1973 | Dodge | Challenger | 5.6L V8 340 CID | See Fitment Notes Above |
| 1974 | Dodge | Challenger | 5.9L V8 360 CID | See Fitment Notes Above |
| 1966-1974 | Dodge | Charger | 5.2L V8 318 CID | See Fitment Notes Above |
| 1971-1973 | Dodge | Charger | 5.6L V8 340 CID | See Fitment Notes Above |
| 1974 | Dodge | Charger | 5.9L V8 360 CID | See Fitment Notes Above |
| 1967-1968 | Dodge | Coronet | 4.5L V8 273 CID | See Fitment Notes Above |
| 1967-1974 | Dodge | Coronet | 5.2L V8 318 CID | See Fitment Notes Above |
| 1972-1973 | Dodge | Coronet | 5.6L V8 340 CID | See Fitment Notes Above |
| 1973-1974 | Dodge | Coronet | 5.9L V8 360 CID | See Fitment Notes Above |
| 1967 | Plymouth | Barracuda | 4.5L V8 273 CID | See Fitment Notes Above |
| 1968-1974 | Plymouth | Barracuda | 5.2L V8 318 CID | See Fitment Notes Above |
| 1968-1969 | Plymouth | Barracuda | 5.6L V8 340 CID | See Fitment Notes Above |
| 1972-1973 | Plymouth | Barracuda | 5.6L V8 340 CID | See Fitment Notes Above |
| 1974 | Plymouth | Barracuda | 5.9L V8 360 CID | See Fitment Notes Above |
| 1967-1968 | Plymouth | Belvedere | 4.5L V8 273 CID | See Fitment Notes Above |
| 1967-1970 | Plymouth | Belvedere | 5.2L V8 318 CID | See Fitment Notes Above |
| 1967 | Plymouth | Belvedere II | 4.5L V8 273 CID | See Fitment Notes Above |
| 1967 | Plymouth | Belvedere II | 5.2L V8 318 CID | See Fitment Notes Above |
| 1973-1974 | Plymouth | Cuda | 5.2L V8 318 CID | See Fitment Notes Above |
| 1970-1973 | Plymouth | Cuda | 5.6L V8 340 CID | See Fitment Notes Above |
| 1974 | Plymouth | Cuda | 5.9L V8 360 CID | See Fitment Notes Above |
| 1970-1974 | Plymouth | Duster | 5.2L V8 318 CID | See Fitment Notes Above |
| 1970-1973 | Plymouth | Duster | 5.6L V8 340 CID | See Fitment Notes Above |
| 1974 | Plymouth | Duster | 5.9L V8 360 CID | See Fitment Notes Above |
| 1968 | Plymouth | GTX | 5.2L V8 318 CID | See Fitment Notes Above |
| 1971-1973 | Plymouth | Road Runner | 5.6L V8 340 CID | See Fitment Notes Above |
| 1974 | Plymouth | Road Runner | 5.9L V8 360 CID | See Fitment Notes Above |
| 1967-1968 | Plymouth | Satellite | 4.5L V8 273 CID | See Fitment Notes Above |
| 1967-1974 | Plymouth | Satellite | 5.2L V8 318 CID | See Fitment Notes Above |
| 1972 | Plymouth | Satellite | 5.6L V8 340 CID | See Fitment Notes Above |
| 1974 | Plymouth | Satellite | 5.9L V8 360 CID | See Fitment Notes Above |
| 1967-1969 | Plymouth | Valiant | 4.5L V8 273 CID | See Fitment Notes Above |
| 1968-1969 | Plymouth | Valiant | 5.2L V8 318 CID | See Fitment Notes Above |
Specs:
| Brand | Flowtech |
|---|---|
| Collector Diameter | 3.00 inch |
| Bolt Size | 5/16-18 x 3/4 |
| Emission Code | 4 |
| Engine | Chrysler Small Block LA |
| Header Finish | Black Paint |
| Header Style | Long Tube |
| Primary Tube Dia. | 1-5/8 inch |
| Product Type | Headers |
| Tube Material | Mild Steel |
| 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 7 reviews
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Product Reviews
★★★★★ 1
Still soft but looks terrible after 1 wash. Save your money
Color: White, Size: Small, Color: White, Size: Small
Update: sweater looked great when I received. After 1 wash it looks terrible. Looks like it’s been washed too many times, material fuzzy and piled. After wearing it once, it snagged and the knit pulled through. I would NOT recommend. I had such high hopes. Save your money.
Very nice sweater, especially for the price! I love the details of the buttons on the sleeves. It is SO soft. It’s not super thick as I can see my skin through it when pressing my hand up against fabric. However, it’s not see through when wearing it. It’ll be perfect in cooler weather and perfect in the winter with a coat but won’t cause me to overheat when in a heated environment. I do feel like it runs big. I could have sized down a size. Although I’m not sure if it’ll shrink after a wash or two.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
★★★★★ 3
Disappointed.
Color: Blue, Size: Large, Color: Blue, Size: Large
This sweater is so comfortable and very soft. It fits well in a flattering, oversized way. But after one wash it is pilled everywhere which makes it look old and shabby. It’s at a price point where I feel compelled to return it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2026
★★★★★ 5
Perfect for casual wear and dressy style
Color: Dark Green, Size: Small
This sweater is soooo soft and the color is so rich. The fit of it is perfect, not too tight and not too baggy, just right and I used the size guide to pick my size. Just for reference, I am 5'3" and 130lbs, 38C bust. It's well made and washes great. I chose to hang dry mine as I typically don't put any of my sweaters in the dryer to dry, just to fluff them. I have this one in two colors, the green and the tan/beige and I would say they are both a true representative of the color shown.
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Reviewed in the United States on November 15, 2025
★★★★★ 5
Love the long sleeves!!!
Color: White, Size: Small
Love it! I'm 5' 11" tall and I purchased this according to reviews. Several people commented on the length of the sleeves. I have a hard time finding sleeves long enough if it's not " tall" sized. It was perfect for me. If this washes nice I'm going to consider purchasing more in other colors. I ordered the white and just love the long ribbed cuffs with the line of buttons. Very soft.
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Reviewed in the United States on May 1, 2026
★★★★★ 4
Nice cozy sweater, but handwashing is recommended
Color: Beige, Size: Medium
Soft and cozy, but does not wash well. Goes with everything. This sweater fits well and looks great. I received lots of compliments while wearing it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
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