SKU: 36662437862

Flowtech LS Swap Exhaust Manifolds - 31730-1FLT

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

Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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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: 36662437862

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Penndutchdiva
West Palm Beach, US
★★★★★ 5
Perfect for our party
Color: Gold Forks, Size: 60Pcs
Exactly what we needed for a milestone party. Attractive color and because they are slender- very classy looking.
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Reviewed in the United States on March 4, 2026
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Deb T
Pawtucket, US
★★★★★ 5
Just as expected
Color: Gold Forks, Size: 60Pcs
Very nice quality and are just as described.
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Reviewed in the United States on April 30, 2026
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BrookeB
Lowell, US
★★★★★ 5
High-end quality gold forks
Color: Gold Forks, Size: 60Pcs
Used these for hosting a House Warming Party! They were such good quality and gave a high end expensive look for a great price! Perfect for any event
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Reviewed in the United States on January 10, 2026
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Amazon Customer
Whiting, US
★★★★★ 4
Elegant Hammered Gold Plastic Forks That Don't Feel Cheap
Color: Gold Forks, Size: 60Pcs, Color: Gold Forks, Size: 60Pcs
These forks were a fun addition to our holiday table. They’re a bright, shiny gold with a hammered finish and honestly look much more expensive than they are. At a glance, they really do resemble real gold flatware. They’re also surprisingly solid. These are not flimsy, fast-food-style plastic utensils. The forks feel sturdy in your hand and can easily handle everything from salad to steak—no bending tines or snapping. Once they’re on the table, you wouldn’t know they’re plastic until you pick them up. They only downside to them is that the design to have them come to a point at the end of the handle made it slightly uncomfortable in my hand while using it. They’re an excellent option for weddings, parties, or any event where you want an elegant table setting without using real metal flatware. They also hand-wash well and can be reused multiple times, which makes them a nice choice even for at-home entertaining when you want something that looks special without the worry.
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Reviewed in the United States on February 5, 2026
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Robert
Charlottesville, US
★★★★★ 5
Forks
Color: Gold Forks, Size: 60Pcs
Added unique style to my place setting
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Reviewed in the United States on December 20, 2025

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