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Flowtech Headers 11504FLT

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Headers, Mid-Length, Steel, Painted, Chevy, GMC, Small Block, Pair

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  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight fees. Valid on orders shipped in the contiguous United States.

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Brand: Flowtech

Manufacturer's Part Number: 11504FLT

Part Type: Headers

Product Line: Flowtech Headers

Summit Racing Part Number: BIG-11504FLT

UPC: 787480115041

Header Style: Mid-length

Header Material: Steel

Header Finish: Painted

Weld-Up: No

Primary Tube Diameter (in): 1 5/8 in.

Collector Attachment: 3-bolt flange

Collector Diameter: 3.000 in.

Tuned: No

Primary Tube Gauge: 18-gauge

Flange Style: Standard

Flange Thickness (in): 5/16 in.

Bolts/Studs Included: Yes

Gaskets Included: Yes

Reducers Included: Yes

Crossover Pipe Included: No

Catalytic Converter(s) Included: No

Motor Mounts Included: No

Transmission Mount Included: No

Quantity: Sold as a pair.

Notes: Will not fit crew cab dually models.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

These precision-engineered Flowtech headers are leak-tested to get maximum performance and fuel economy from your engine. They're made from .049 in. cold-rolled, flash-controlled tubing and feature Flowtech's mandrel-formed Power Plenum collector. All ports are precisely fitted and finished with durable, leak-proof, O-ringed port seals. The headers are available with either a high satin black painted finish or a silver luster ceramic coating. In addition, they come with all mounting hardware, including bolts, nuts, and premium gaskets. Unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This includes components like cylinder heads, chassis, steering, motor mounts, body mounts and bushings, etc. If your vehicle is using aftermarket components, parts from other applications, or custom-altered parts, then it is the installer's responsibility to verify fitment.

Warranty

Most Helpful Reviews Review this Product

7 Customer Reviews for Flowtech 11504FLT - Flowtech Headers

Average Customer Review

5 Star

(1)

4 Star

(3)

3 Star

(1)

2 Star

(2)

1 Star

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Get what you pay for

Ordered these headers for my 95 GMC K1500, was looking for something other than manifolds without the heavy price tag of redoing my exhaust so I went with these headers and the y-pipe that is supposed to match it. Upon receiving they were scratched and dented, which wasnt a huge deal to me because its a work truck not a show truck. The headers themselves (minus NO room for spark plug removal) are not all that bad, but the gaskets they send with it are not good at all. About 7 months and 8-9000 miles on them and they are burnt out in 3 spots already and leaking horribly. I torqued the bolts i was able to, but its a challenge to get at some of them even with a wrench in-truck. Will spend the little bit more money next time for a quality set of gaskets, if I can find the correct ones because they do not list specific port sizes on the site to order by. ...read more

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Reviewer: KRISTOPHER from WI

Date: January 01, 2015

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Price/Value
Quality

Headers 89 1500

Summit RacingSummit Racing Verified Purchase

Easy installation but created spark plug clearance issue (removal/replacement of plugs). Also none of the accessory brackets mounting holes line up on the header(holes off). Also the Driver side o2 bung is welded on the top side, so the stock o2 sensor does not have the proper clearance between the pipe and fire wall. Has to be re-routed or a new o2 bung needs to be welded in on the side. ...read more

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Reviewer: JOE from MO

Date: October 20, 2014

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Quality

Easy

Summit RacingSummit Racing Verified Purchase

Easy installation just wish It didn't come with a few scratches and had to repaint over them but other than that awesome product. I also have some flowtech headers on my 91 Camaro and they sound great. I know flowtech don't make late model headers there from a 69 Camaro and fit well just a few mods.

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Reviewer: MIGUEL from FL

Date: August 13, 2014

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great piece

Summit RacingSummit Racing Verified Purchase

Great piece. I got them and sand blasted and painted them work great and look nice painted sound great

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Reviewer: RUSSELL from MO

Date: August 12, 2014

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Flowtech Headers 11504FLT

Summit RacingSummit Racing Verified Purchase

Good headers at a great price. I recommend this if you are looking for a better alternative than exhaust manifolds, and they are cheaper than other headers available. However, when I received mine they had already had rust on them and the pipes were dented in spots, (not for performance boost), and the gasket surface for the reducers were not flat but bent. ...read more

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Reviewer: DYLAN from IA

Date: August 08, 2014

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Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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