SKU: 36662437862

Flowtech LS Swap Exhaust Manifolds - 31730-1FLT

Sale price$149.82 Regular price$166.47
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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: 36662437862

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 504 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
MCSpellman
Bozeman, US
★★★★★ 5
Walking in Style
Size: 9, Color: Black
Live these dress slipons. Very comfortable and stylish. Can be worn for casual or formal. Size is true to what is stated in the description. Quality seems to be well made. White soles are easy to clean with a damp cloth. Highly recommended
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2025
D
Verified Purchase
Dennis harrington
West Palm Beach, US
★★★★★ 3
My heel collapsed the back a few times
Size: 11, Color: Black Grainy Leather
Love everything about these shoes light comfortable look great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
D
Verified Purchase
Dianne
West Palm Beach, US
★★★★★ 5
Men’s oxfords
Size: 10.5, Color: Black
Good quality and perfect fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2026
F
Verified Purchase
Fletch
Houston, US
★★★★★ 5
Overall Great.
Size: 10.5 Wide, Color: Black
Great product. Great value. Great style. Overall great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
M
mkhmmr
Phoenix, US
★★★★★ 5
Great office space divider without being suffocating
Color: Black, Size: 4' Wide x 6' Tall (Fluted)
This is a nice option for dividing up your office space. It's lightweight enough to be moved when needed, but large enough to create a sound and sight barrier between desks. The window design at the top also allows light through so that you don't like you are boxed in. Overall, this is a great office divider. It's well made, large enough to make a difference, and portable if you need to move it. And it does this without making you feel like you're in a box thanks to the fluted clear window at the top. It does the job I need it to.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2023

recommand products