Mishimoto Subaru Exhaust Adapter, Stock Downpipe to 3in Exhaust

SKU: MISMMEXH-ADAP-SDAE

Exhaust Tubing

MM Exhaust Adapters

Mishimoto

Mishimoto Subaru Exhaust Adapter, Stock Downpipe to 3in Exhaust

SKU: MISMMEXH-ADAP-SDAE

Exhaust Tubing

MM Exhaust Adapters

IN STOCK! Est Ship 3-5 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

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Description

Don't let a pesky exhaust leak ruin the beautiful exhaust tone from your turbo Subaru. The Mishimoto Subaru Exhaust Adapter allows a smooth exhaust flow transition between your stock downpipe and your 3in sized exhaust. The engineers at Mishimoto know your Subaru was built for harsh climates, so they designed this adapter with 304 stainless steel material so it will never rust. This adapter installs in under 15 minutes and includes stainless steel hardware and a new 3in 2-bolt flange gasket, making installation simple. This exhaust adapter mates directly with your stock 2015 WRX exhaust flange and gets rid of any exhaust leaks when combining with the Mishimoto 2015+ WRX/STI Cat-Back Exhaust. This Mishimoto Subaru Exhaust Adapter also comes with the Mishimoto Lifetime Warranty you know and trust.

Product Overview

By installing the Mishimoto downpipe, the exhaust system is able to breathe easier, providing a significant increase in horsepower and torque when tuned. Above all, this Mishimoto downpipe provides a significant torque improvement in the low end and across the entire power band. The Mishimoto downpipe provided an extremely aggressive exhaust tone under acceleration and boost, giving you that aggressive tone you have been looking for! The engineers at Mishimoto designed their downpipe with precision TIG-welded 304 stainless steel. This allows uninterrupted exhaust flow. To customize the downpipe even further, it is offered in either a catted or catless version. Because the engineers know that owners commonly like to add wideband O2 gauges, they included an additional O2 sensor bung and plug in an ideal location for aftermarket wideband sensors! To top it off, the Mishimoto downpipe includes new turbine housing studs and nuts (which commonly strip), a new turbo outlet gasket, a new flange gasket, and all stainless steel hardware, so you donÃ¢â‚¬â„¢t have to worry about rust on your hardware. Like all of our parts, this downpipe comes with the Mishimoto Lifetime Warranty you know and trust.

Features and Benefits

Allows smooth exhaust flow transition between stock downpipe and 3in sized exhaust
Eliminates infamous exhaust leaks caused by mating different exhaust flanges
304 stainless steel adapter will not rust in harsh climates
Installs in under 15 minutes
Includes stainless steel hardware and 3in 2-bolt flange gasket

Product Details

Alternate Part Number:	MEXHADAPSDAE
Color:	Silver
Description:	Subaru Exhaust Adapter, Stock Downpipe to 3" Exhaust
Feature Bullet 1:	Allows smooth exhaust flow transition between stock downpipe and 3" sized exhaust
Feature Bullet 2:	Eliminates infamous exhaust leaks caused by mating different exhaust flanges
Feature Bullet 3:	304 stainless steel adapter will not rust in harsh climates
Feature Bullet 4:	Installs in under 15 minutes
Feature Bullet 5:	Includes stainless steel hardware and 3" 2-bolt flange gasket
Finish:	Stainless
Install Difficulty:	1
Installation Difficulty:	2/5
Material:	Stainless Steel
Part Number:	misMMEXH-ADAP-SDAE
SellingPoint01:	Allows smooth exhaust flow transition between stock downpipe and 3-in sized exhaust
SellingPoint02:	Eliminates infamous exhaust leaks caused by mating different exhaust flanges
SellingPoint03:	304 stainless steel adapter will not rust in harsh climates
SellingPoint04:	Installs in under 15 minutes
SellingPoint05:	Includes stainless steel hardware and 3-in 2-bolt flange gasket
SellingPoint06:	Mishimoto Lifetime Warranty
SellingPoint07:	N/A
SellingPoint08:	N/A
SellingPoint09:	N/A
SellingPoint10:	N/A
SellingPoint11:	N/A
SellingPoint12:	N/A
SellingPoint13:	N/A
SellingPoint14:	N/A
SellingPoint15:	N/A
TechSpec Applications:	2001+ Subaru WRX--2004+ Subaru WRX STI--2004+ Subaru Forester XT--2005+ Subaru Legacy GT--2005-2009 Subaru Outback XT
TechSpec Chassis Codes:	BL, BP, BM, BR, GH, GE, GR, GV, SG5, SH, VA
TechSpec Engine Codes:	EJ255-- EJ257-- FA20DIT
TechSpec Includes:	(1) 3-inch to 2.5-inch Exhaust Adapter--(1) 3-inch 2-Bolt Flange Gasket--(2) Stainless Steel Bolts, Serrated Flange Nuts & Washers--Mishimoto Lifetime Warranty
TechSpec Material:	304 Stainless Steel
TechSpec Note:	N/A
TechSpec Overall Height (Inches):	5.24
TechSpec Overall Length (Inches):	3.94
TechSpec Overall Width (Inches):	1.54
TechSpec Pipe Diameter:	N/A
TechSpec Weight (Pounds):	2

Part Type

Exhaust Pipe Adapter

Data: v4.2 - Upd: 2026-10-11 01:10:21

Features

304 stainless steel adapter will not rust in harsh climates
Allows smooth exhaust flow transition between stock downpipe and 3-in sized exhaust
Eliminates infamous exhaust leaks caused by mating different exhaust flanges

Specifications

Product Attributes - Brand: Mishimoto
Product Attributes - Manufacturer's Part Number: MMEXH-ADAP-SDAE
Product Attributes - Part Type: Exhaust Tubing
Product Attributes - Product Line: Mishimoto Exhaust Adapters
Product Attributes - UPC: 748354020946
Product Attributes - Tubing Material: 304 stainless steel
Product Attributes - Tubing Finish: Natural
Product Attributes - Mandrel-Bent: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: For use when connecting flanged exhaust pipes to flared exhaust pipes.

Reference Information

Brand Name/s	Mishimoto
StreetFX SKU	misMMEXH-ADAP-SDAE
SFX Item ID	4050349
Supplier Item Code	4050349
Manufacturer SKU	MMEXH-ADAP-SDAE
Manufacturer UPC	748354020946
Alternative References	3in