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Description
STI SPORT MUFFLER B4 For LEGACY B4 (BL) ST4430021001Brand STI Product SPORT MUFFLER B4 Product Number ST4430021001 Description This product provides dual left and right tail ends, without changing the muffling format of the standard multi stage expanding muffler. It is tuned to emphasize the dry sound of boxer engines. The outer shell of the main muffler is made from stainless steel. The STI logo is stamped on the top of the tail pipes. Compatible Vehicle LEGACY B4 (BL) Compatible Models Model
| Brand | STI |
| Product | SPORT MUFFLER B4 |
| Product Number | ST4430021001 |
| Description | This product provides dual left and right tail ends, without changing the muffling format of the standard multi-stage expanding muffler. It is tuned to emphasize the dry sound of boxer engines. The outer shell of the main muffler is made from stainless steel. The STI logo is stamped on the top of the tail pipes. |
| Compatible Vehicle | LEGACY B4 (BL) |
| Compatible Models |
Model adaptation symbol: A 2003-year May-2004 04 May 2.0i (AWD / 4AT) - 2.0i (AWD / 4AT) - 2.0R (AWD / 5MT) - 2.0R (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GTspec.B (AWD / 5MT) ___ 2.0GTspec.B (AWD / 5AT) ___ 3.0R (AWD / 5AT) - 3.0R (AWD / 5AT) - model adaptation symbol : B 2004 year 05 January to May 2005 2.0i (AWD / 4AT) - 2.0i (AWD / 4AT) - 2.0R (AWD / 5MT) - 2.0R (AWD / 5MT) - 2.0R (AWD / 4AT) - 2.0 R (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GT (AWD / 5AT) ___ 2.0GTspec.B (AWD / 5MT) ___ 2.0 GTspec.B (AWD / 5AT) ___ 3.0R (AWD / 5AT) - 3.0R (AWD / 5AT) - 3.0Rspec.B (AWD / 6MT) - model adaptation symbol: C 2005 Jun-2006 May 2.0i (AWD / 5MT) - 2.0i (AWD / 4AT) - 2.0i (AWD / 4AT) - 2.0R (AWD / 5MT) - 2.0R (AWD / 4AT) - 2.0R (AWD / 4AT) - 2.0R (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GTspec.B (AWD / 5MT) ___ 2.0GTspec.B (AWD / 5AT) ___ BLITZEN 2006 (AWD / 5MT) - BLITZEN 2006 (AWD / 5AT) - 3.0R (AWD / 5AT) - 3.0R (AWD / 5AT) - 3.0 Rspec.B (AWD / 6MT) - 3.0Rspec.B (AWD / 5AT) - model adaptation symbol: D 04 May 2006 06 May and 2007 2.0i (AWD / 5MT) - 2.0i (AWD / 4AT) - 2.0R ( AWD / 5MT) - 2.0R (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GTspec.B (AWD / 6MT) ___ 2.0GTspec.B (AWD / 5AT) ___ 3.0 R (AWD / 5AT) - 3.0Rspec.B (AWD / 6MT) - 3.0Rspec.B (AWD / 5AT) - model adaptation symbol: E 05 May 2007 - 2008 04 May 2.0i (AWD / 5MT) - 2.0i B -SPORT (AWD / 5MT) - 2.0i (AWD / 4AT) - 2.0i B-SPORT (AWD / 4AT) - 2.0i Brighton (AWD / 4AT) - 2.5i (AWD / 4AT) - 2.0Rspec.B (AWD / 5MT) - 2.0Rspec.B (AWD / 4AT) -. 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GT SI-CRUISE (AWD / 5AT) ___ 2.0GTspec B (AWD / 6MT) ___ 2.0GTspec.B (AWD / 5AT) ___ 3.0R (AWD / 5AT) - 3.0R SI-CRUISE (AWD / 5AT) - model adaptation symbol: F 2008 year May-2009 2.0i (AWD / 5MT) - 2.0i (AWD / 4AT) - 2.5i (AWD / 4AT ) - 2.5i SI-CRUISE (AWD / 4AT) - 2.0GT (AWD / 5MT) ___ 2.0GT (AWD / 5AT) ___ 2.0GT ES (AWD / 5AT) ___ 2.0GTspec.B (AWD / 6MT) ___ 2.0GTspec .B (AWD / 5AT) ___ 3.0R ES (AWD / 5AT) - S402 (AWD / 6MT) -
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| Remarks | * Since there is no clearance with the tail pipe, this product can not be installed together with Subaru genuine rear bumper skirt and exhaust finisher. * Vibrations and noise are transmitted more easily to the interior of the car due to the hard bushings. * For B4 turbo (2.0GT, 2.0GT Spec.B, 2.0GT SI CRUISE, 2.0GT EyeSight) * The explanation of this product is for Japanese specification. |
| Notes | Images are for illustration purpose only. Actual product may vary. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 2085 reviews
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Product Reviews
★★★★★ 4
Quality is good
Color: Black, Size: 6 Panel
Good one.
Some support need for it to stand
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Reviewed in the United States on January 28, 2026
★★★★★ 5
Very nice for the price
Color: Natural, Size: 8 Panel
I use this to hide my cat area in our garage. Makes it look clean
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Reviewed in the United States on March 1, 2026
★★★★★ 5
Perfect & light weight divider
Color: Charcoal Gray, Size: 8 Panel
I really like this divider. I have it in my bedroom which is also where my "work from home office" is. The divider blocks my bedroom and dresser perfectly. It's very light weight and very easy to move.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Room Divider
Color: Beige, Size: 8 Panel
I received my 8 panel folding divider and realized that I probably should have just ordered the 6 panel one. But it is nice and sturdy and was already put together. I am very pleased with the product.
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Reviewed in the United States on December 13, 2025
★★★★★ 5
Great Dividers
Size: 6 Panel-120"W, Color: Beige
Love these!! Many uses. Simple, nice looking, sturdy overall. Well made.
Bought to divide the unsightly storage area from the calm rest area in the basement.
Also, these worked well for our garage party where the dividers let light and air in, though blocked the view of our party area from the cars driving by.
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Reviewed in the United States on April 14, 2026