SKU: 3290507668

Flowtech LS Swap Exhaust Manifolds - 31730-3FLT

Sale price$172.32 Regular price$191.47
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Shipping Estimate
USA
  • USA
  • CAN

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

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Description

Flowtech LS Swap Exhaust Manifolds - 31730-3FLTOverview: 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 Black Ceramic
Header Finish Black 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: 3290507668

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4.6 ★★★★★
Based on 28 reviews
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Amazon Customer
Battle Creek, US
★★★★★ 5
This plush, well sewn dog toy has become my dog’s best friend
Color: Enno
This adorable plush dog toy has become my dog’s best friend( besides her big lab brother!) and she just loves playing with it. It is made and sewn well and holds up to her keeping it in her mouth and then tossing it around her. I searched on Amazon for a soft, medium sized stuffed animal for her that she could nuzzle and hold in her mouth that did not have a squeaker as the sound scared her. This Trixie Be Eco Enno plush dog toy has been the perfect choice. It is carefully sewn and even has no dangerous buttons that she could chew on and pull off and swallow. Rather, the eyes, nose and mouth have all been carefully and adorably sewn into the dog’s face. It has stood up to wear and has not torn or come apart. It has been well worth the money I spent and I’m glad Amazon carried this nice toy for her.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 25, 2026
K
Verified Purchase
KB
Draper, US
★★★★★ 5
Item is as advertised
Color: Elly
Our fur baby loves his toy. Very soft and sturdy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
S
Verified Purchase
sophie
Natrona Heights, US
★★★★★ 5
amazing cuddle toy
Color: Elwin
my dog’s fav toy at the moment. definitely not for hard chewers since it’s not durable. my girl loves carrying it around, squeaking it and cuddling with it. definitely worth the money, super cute and love how much my dog carries it around!
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Reviewed in the United States on June 3, 2026
H
Verified Purchase
Happy Gardener
Whiting, US
★★★★★ 4
Soft non-squeaker
Color: Enno
Our son's dog loved this non-squeaker! Very easy to carry around the house and cuddle with on his bed.
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Reviewed in the United States on November 22, 2025
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WoostaDon
Natrona Heights, US
★★★★★ 5
Molly loves this
Color: Elroy
My small dog loves this
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Reviewed in the United States on March 4, 2026

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