SKU: 3572181610

Flowtech LS Swap Exhaust Manifolds - 31730-1FLT

Sale price$149.82 Regular price$166.47
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 24 - Sep 29

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Description

Flowtech LS Swap Exhaust Manifolds - 31730-1FLTOverview: These Flowtech cast iron exhaust manifolds have a 2. 25 inch outlet, natural cast finish and are designed to hug close to the engine block so they fit into a wide variety of replacement and engine swap applications at a budget friendly price. Being cast iron means they will provide years of leak free performance with less under hood noise than traditional headers. Plus, their shorty design means you can route exhaust tubing close to your

Overview:

These Flowtech cast iron exhaust manifolds have a 2.25 inch outlet, natural cast finish and are designed to hug close to the engine block so they fit into a wide variety of replacement and engine-swap applications at a budget friendly price. Being cast iron means they will provide years of leak-free performance with less under hood noise than traditional headers. Plus, their shorty design means you can route exhaust tubing close to your frame/floor pan for maximum ground clearance.

Features:

  • Intended for GM LS engine swap applications where durability and leak-free sealing is desired at a budget-oriented price
  • 304 stainless steel mating flanges included (mating flange fasteners are not included)
  • 2.25 inch outlet diameter offers improved flow for maximum performance from a cast iron exhaust manifold
  • 2 bolt exit flange configuration matches the E-rod exhaust manifolds for a factory like fitment. This allows the use of OE gaskets and fasteners if desired, for an OE quality seal and fitment to emissions devices
  • Cast from Hi-Silicon-Moly Ductile Iron to provide durability and corrosion resistance
  • Tight tuck design provides universal fit for most popular chassis and a clean traditional muscle car appearance
  • Available in plain as-cast finish or with black or silver ceramic coatings for reduced engine compartment temps and improved corrosion resistance

Application:

  • Universal

Specs:

Application Multi-fit
Brand Flowtech
Choose Your Part Manifold
Collector Diameter 2.25 inch
Emission Code 8
Engine GM LS
Finish Silver Ceramic
Header Finish Silver Ceramic
Header Style Manifold
Material Cast Iron
Primary Tube Dia. 1-3/4 inch
Product Type Manifold
Subframe Stock
Tube Material Cast Iron
Type of Component Manifold
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:
  1. 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
SKU: 3572181610

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Marti
Boise, US
★★★★★ 5
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After trying several other brands that actually my size did not have the luxury feeling of these. T although x large they have the BEST feel and function. I put lotion on then slip them on and within a few minutes my dry cracked heals are soft. Really a nice product.
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Reviewed in the United States on July 24, 2024
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Tina Taylor
Dallas, US
★★★★★ 3
Ok
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Reviewed in the United States on March 6, 2026
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Savanna
Bozeman, US
★★★★★ 5
Sparkly good value for money
Color: Silver
Very pretty and sparkly. Use lotion before hand and it sticks even better.
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Reviewed in the United States on December 31, 2025
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Barbarilla
Phoenix, US
★★★★★ 5
Extra fine glitter
Color: Gold
Extremely fine. I plan on adding it to my spf body oil. Hoping it doesn’t clog the line but I absolutely love this! The pump is so cute. I love that it’s glass. I know there are cuter ones online so you could just get this for the glitter and put it into another one that’s more ornate. It’s just so much fun. Buy it now
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Reviewed in the United States on July 19, 2025
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zoraida Leandry Rosario
Waukegan, US
★★★★★ 5
Brillo
Color: Silver
Lo compre por recomendación y es excelente, sirve para bailarina y actividades de noche
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Reviewed in the United States on March 20, 2026

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