Description

Headers – LS Turbo Headers – 1.875 in Primary – 3 in Collector – Up and Forward – Gaskets Included – Stainless – Natural – GM LS-Series – Universal – Pair

Why Choose Us?



Frequently Asked Questions​

As an Authorized Automotive Retailer in the United States, we take pride in guaranteeing 100% authentic products from all brands available on our website. With partnerships spanning 1,000+ brands and a network of 20+ distributor warehouses nationwide, we maintain millions of auto parts in inventory across the USA, ensuring quick shipping and reliable service to our customers. When you shop with us, you're investing in quality and trust.
We believe we have the fastest backorder system in the U.S. auto parts industry, thanks to our strong partnerships with brands and vendors. Nearly all backordered auto parts are shipped directly by the vendors without any additional delays, or they are placed as special orders on the same day. In most cases, backordered parts are delivered within 5-10 days.
We offer unbeatable prices and the best shipping rates on auto parts, with exclusive protection and insurance included to safeguard your order from damage or loss. Enjoy convenient door-to-door delivery, real-time tracking, and our 100% satisfaction guarantee for a smooth, worry-free experience.
Our standard shipping typically takes 1-3 business days. We will provide estimated shipping time for each product. While we aim to deliver as quickly as possible, this timeframe ensures all orders are processed, prepared, and dispatched with care. If the products are not ready for shipping in 72 hours, we will refund you 100%
Absolutely. Once your order is dispatched, you’ll receive an email with tracking details, so you can follow your shipment every step of the way. Every step of shipping process will be sent through email notifications or using tracking page.
Every product page includes a stock level indicator to show what’s available. We always update the inventory 24/24. We’ll be happy to check availability and provide updates on new stock arrivals if you need a help.
We’re sorry to hear that your order wasn’t delivered in perfect condition. Please email us with your order number, a description of the issue, and photographs of the damaged item. Once we receive this information, we’ll arrange for a replacement or refund and handle the return process.
You can return items within 30 days of receipt. Ensure the product is new in its original packaging and securely wrapped for safe transit. Once we receive the item in sellable condition, we’ll issue a full refund for the product value. Contact us for the return address and further instructions.

About FLOWTECH

A division of Holley, Flowtech focuses on high-performance exhaust components. Their easy-to-install products range from headers and manifolds to mufflers to complete systems, all designed to give performance and audible gains all at a very affordable cost.

International Shipping

Below are estimated rates and delivery times for popular destinations; full carrier options are available at checkout.

Our dedicated team has years of experience managing international logistics and customs documentation to ensure smooth delivery from our US warehouse to your door. Please review our shipping policy and local import regulations before ordering.

Loading international estimates...

Reviews

There are no reviews yet.

Be the first to review “FLOWTECH LS 409ss Turbo Headers Up & Forward Style 11537FLT”

Your email address will not be published. Required fields are marked *

Recently viewed products

  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    PERMATEX Medium Threadlocker 10ml Bottle – Blue 24300

    SKU: PEX24300
    Product information
    • Weight0.07 lbs
    • Dimensions6.5 × 3.75 × 1 in
    • Product Line

      Blue

    • Color

      Blue

    • Quantity

      Each

    • Container

      Bottle

    • Volume

      10 ml

    Details...
    Original price was: $11.94.Current price is: $10.85.Add to cart
    Original price was: $11.94.Current price is: $10.85.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MSD IGNITION 7600 RPM Module ASY11545

    SKU: MSDASY11545
    Product information
    • Weight0.01 lbs
    • Dimensions2.6 × 1.75 × 0.45 in
    • Quantity

      Each

    • Variant

      Yes

    • Rpm

      7600 RPM

    • Variant Group

      RPMChips1

    • Variant Column

      RPM

    Details...
    Original price was: $7.90.Current price is: $7.18.Add to cart
    Original price was: $7.90.Current price is: $7.18.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MOOG Ball Joint K5208

    SKU: MOGK5208
    Product information
    • Weight1.25 lbs
    • Dimensions5.4 × 3.4 × 2.7 in
    • Quantity

      Each

    • Greasable

      Yes

    • Mounting Style

      Bolt In

    • Upper/Lower

      Upper

    • Hardware Included

      Yes

    Details...
    Original price was: $35.31.Current price is: $32.10.Add to cart
    Original price was: $35.31.Current price is: $32.10.
    Quantity Only 7 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    RACING OPTICS Tearoff SpeedStack3 Stilo/ ST5/ Zero 3459C4

    SKU: ROP3459C4
    Product information
    • Weight0.17 lbs
    • Dimensions20 × 4.05 × 0.25 in
    • Product Line

      SpeedStack 3

    • Center To Center Distance

      12 in

    • Laminated Stack

      Yes

    • Thickness

      4 mm

    • Tear Offs Per Stack

      3.0

    Details...
    Original price was: $43.14.Current price is: $35.95.Add to cart
    Original price was: $43.14.Current price is: $35.95.
    Quantity Only 6 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    SEALED POWER Cast Piston Ring Set E233X40

    SKU: SEAE233X40
    Product information
    • Weight1.265 lbs
    • Dimensions5.25 × 5.05 × 3.25 in
    • Quantity

      Kit

    • Variant

      Yes

    • Variant Group

      Piston Rings150

    • Variant Column

      Bore (standard)

    • Product Line

      Economy

    Details...
    Original price was: $54.35.Current price is: $49.41.Add to cart
    Original price was: $54.35.Current price is: $49.41.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    SPC PERFORMANCE Fastrax Toe Adapter Kit 91100

    SKU: SPP91100
    Product information
    • Weight0.46 lbs
    • Dimensions11.05 × 4.75 × 1.75 in
    • Hardware Included

      Yes

    • Material

      Steel

    • Color

      Black

    • Finish

      Paint

    • Quantity

      Each

    Details...
    Original price was: $62.70.Current price is: $57.00.Add to cart
    Original price was: $62.70.Current price is: $57.00.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HALTECH Elite 1500 ECU HT-150900

    SKU: HTHHT-150900
    Product information
    • Weight2.332 lbs
    • Dimensions9 × 9 × 2.5 in
    • Product Line

      Elite 1500

    • Quantity

      Each

    • Self Tuning

      Yes

    • User Tunable

      Yes

    • Timing Control

      Yes

    Details...
    Original price was: $1,838.85.Current price is: $1,599.00.Add to cart
    Original price was: $1,838.85.Current price is: $1,599.00.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    VENTSHADE Window Ventvisor 194758

    SKU: VEN194758
    Product information
    • Weight2.43 lbs
    • Dimensions47 × 12 × 2 in
    • Product Line

      In-Channel Ventvisor

    • Application Specific

      Yes

    • In Channel / Out Of Channel

      In Channel

    • Front Included

      Yes

    • Material

      Plastic

    Details...
    Original price was: $77.00.Current price is: $69.99.Add to cart
    Original price was: $77.00.Current price is: $69.99.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WEATHERTECH Black Cargo Liners 401422

    SKU: WEA401422
    Product information
    • Weight3.25 lbs
    • Dimensions49 × 8.5 × 8.5 in
    • Product Line

      Cargo/Truck Liner

    • Application Specific

      Yes

    • Textured

      Yes

    • Material

      Plastic

    • Color

      Black

    Details...
    Original price was: $161.00.Current price is: $145.95.Add to cart
    Original price was: $161.00.Current price is: $145.95.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WEATHERTECH Cocoa Seat Protector SPB002CO

    SKU: WEASPB002CO
    Product information
    • Weight2.4 lbs
    • Dimensions3 × 11 × 9 in
    • Material

      Polyester Cotton Blend

    • Color

      Cocoa

    • Finish

      Natural

    • Quantity

      Each

    • Variant

      Yes

    Details...
    Original price was: $194.34.Current price is: $161.95.Add to cart
    Original price was: $194.34.Current price is: $161.95.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist

    71