Free Shipping
Best Price Guarantee
30 Days No-Hassle Returns
Flowtech 11547FLT - Block Hugger Header - Shorty - (409 Stainless Steel) - 3/8 in. Steel Flanges - (Polished Finish)
Flowtech 11547FLT - Block Hugger Header - Shorty - (409 Stainless Steel) - 3/8 in. Steel Flanges - (Polished Finish)
Since 2011, We've Shipped Over 1,000,000 Automotive Parts to Canadian Customers
Finally a great car parts website for Canadians! Love it.
James S.
Completely satisfied with prices and customer service.
Alan W.
The price was better than the competitors, not to mention the shipping time was astronomically lower.
William H.
Great experience, good prices and lots of stock!
Angus G.
- Jump to Category:
- Product Info
- Description
- Vehicle Fitment
- Reviews
Product Info

Flowtech 11547FLT - Block Hugger Header - Shorty - (409 Stainless Steel) - 3/8 in. Steel Flanges - (Polished Finish)
Flowtech Block Hugger headers are great for street rods where fit and finish are important. Black Huggers make performance and style easy for engine swaps. 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.
Key Features:- Block Hugger Header
- Shorty
- 409 Stainless Steel
- 3/8 in. Steel Flanges
- Polished Finish

Flowtech Performance Exhaust was founded in 1994, by Gary Biggs - exhaust market expert, and became the leader in value priced exhaust systems in less than two decades. In 1999 Flowtech joined Holley Performance Products.
Description
- Block Hugger Header
- Shorty
- 409 Stainless Steel
- 3/8 in. Steel Flanges
- Polished Finish
Vehicle Fitment
Year | Make | Model | Submodel | Engine Size |
---|---|---|---|---|
2014 | CHEVROLET | SILVERADO 1500 | HIGH COUNTRY, LT, LTZ, WT | 5.3L, 6.2L |
2015 | CHEVROLET | SILVERADO 1500 | HIGH COUNTRY, LS, LT, LTZ, SSV, WT | 5.3L, 6.2L |
2014 - 2015 | CHEVROLET | TAHOE | LS, LT, LTZ, PPV, SSV | 5.3L |
2014 | GMC | SIERRA 1500 | BASE, DENALI, SLE, SLT | 5.3L, 6.2L |
2015 | GMC | SIERRA 1500 | BASE, DENALI, SLE, SLT | 5.3L, 6.2L |
2014 | GMC | YUKON | DENALI, SLE, SLT | 5.3L, 6.2L |
2015 | GMC | YUKON | DENALI, SLE, SLT | 5.3L, 6.2L |
2015 | GMC | YUKON XL | DENALI, SLE, SLT | 5.3L, 6.2L |
2014 | GMC | YUKON XL 1500 | DENALI, SLE, SLT | 5.3L, 6.2L |