B58 Performance Valved Catback Exhaust & Charge Pipe Kit
- Mfg Part #
- 048683LAEBKT
- ECS Part #
- ES#4876422
- Brand
-
This product was last offered at the strikethrough price on
05-05-2026
Product Details
B58 Performance Valved Catback Exhaust:
Turner Motorsports new cat-back exhaust is designed to take out restrictions, maximize flow and give your B58 a signature exhaust note that will excite you on every drive from the time it is installed. From the factory the exhaust comes equipped with a a center muffler, rear section resonator and a bulky muffler. The combination of 3 muffler/resonators do its best to quiet down the B58 and as a side effect, increase backpressure. With all of those stop gates how do you expect to get the maximum performance out of your vehicle, you simply cannot do so. Lucky for Turner you no longer have to deal with the quiet and limiting factory exhaust.
If you still have the factory exhaust fitted to your B58, you don't know what your missing. Free up lost performance with a new full cat-back exhaust complete with factory valve control!
To create a cat-back exhaust for this incredible engine the changes happen right after the downpipe. Turner replaced the factory oval pipe with 3.0" T304 stainless steel piping. The true 3.0" exhaust makes its way through the center and rear of the car without the center muffler or resonator to keep flow to a maximum! With smooth mandrel bent transitions the exhaust passes perfectly under the rear subframe for a factory-like fit. Positioned in the rear of the car is their signature B58 muffler with beautiful inlet and outlet piping that creates the perfect exhaust tuning. Featuring relief cut slip joints and fabricated sheet metal brackets the exhaust can be fully adjusted and mounted seamlessly in the factory locations. Dual 4.0" exhaust tips are optioned to fill out the open space in the rear diffuser and complete the rear profile of the vehicle.
Sound clips! Check out our Product Highlight on the ECS Tuning YouTube channel!
Part Design:
- Turner In-house designed and engineered using FARO ARM laser scanning technology and SolidWorks 3D CAD modeling for precision fitment.
- T304 Stainless Material in a natural finish - 1.25mm wall thickness, back purged and TIG-welded throughout
- Full 3.0" Stainless Steel Mandrel Bent Tubing
- T304 Stainless Steel 12mm barbed exhaust hangers Tig-Welded in OE locations for precise fitment.
- Strategically placed slip joints provide the most adjustability to obtain perfect fitment
Features and Benefits:
- Street/Motorsport inspiration
- Controlled by factory valves
- Compatible with factory and aftermarket downpipes (80mm)
- Reduction in back pressure for increased throttle response, TQ and HP
- Dual exit with fitted exhaust tips
Kit Contents:
- 3.0" front exhaust section (direct fitment to the factory downpipe)
- Full 3.0" light weight free-flowing middle muffler sections for better sound, performance and weight savings.
- Valved Rear muffler
- Valve extension harness
- Clamps and Hardware for an OEM+ install
- Optional Turner Exhaust tips - 3.0" Inlet, 4.0" Outlet
B58 Turner Motorsport Charge Pipe:
The B58 OE charge pipe is prone to failure; after constant heat cycling, the factory plastic becomes very brittle, leading to cracks and boost leaks, and ultimately entire part failures. The OE charge pipe has also been proven to break once under increased boost pressure. Replace the weak OE charge pipe with the Turner Motorsport B58 charge pipe for increased air flow, and increased throttle response. You can also safely turn up the boost on your B58 once this kit is installed, and not worry about the problematic factory piece.
Whether you have a stock car and are looking for improved throttle response and peace of mind, or a high boost monster in search of reliability in your big horsepower build, this charge pipe is the solution you’ve been looking for!
Design Features and Benefits:
The upper pipe is constructed from 6063 aluminum for increased durability over the factory plastic charge pipe. Can withstand higher boost pressures while offering OE-like fitment.
Billet CNC throttle body flange for OEM fitment.
Black powder coated for exceptional durability and corrosion resistance.
Lower pipe is constructed of 4-ply reinforced silicone hose and a 6061-T6 black anodized aluminum coupler to retain factory fitment to the turbo.
Silicone provides a smooth transition from turbo outlet to the upper aluminum pipe. The silicone also provides good wear resistance wear the charge pipe is in close contact with the turbo inlet and coolant hoses.
Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| BMW | F30 | 340i | B58 3.0L | Use vehicle selector to confirm fitment |
| BMW | F30 | 340i xDrive | B58 3.0L | Use vehicle selector to confirm fitment |
| BMW | F32 | 440i | B58 3.0L | Use vehicle selector to confirm fitment |
| BMW | F32 | 440i xDrive | B58 3.0L | Use vehicle selector to confirm fitment |
| BMW | F33 | 440i | B58 3.0L | Use vehicle selector to confirm fitment |
| BMW | F33 | 440i xDrive | B58 3.0L | Use vehicle selector to confirm fitment |
| BMW | F36 | 440i | B58 3.0L | Use vehicle selector to confirm fitment |
| BMW | F36 | 440i xDrive | B58 3.0L | Use vehicle selector to confirm fitment |
Kit Contents
| Description | Brand | Qty | Lifetime | |
|---|---|---|---|---|
| Heavy Duty T-Bolt Clamp - Priced Each |
|
1 | YES | |
| T-Bolt Hose Clamp - 70-78mm - Priced each |
|
1 | YES | |
| Preformed Seal - Priced Each |
|
1 | YES | |
| 18-8 Stainless Steel Washer For M4 Screw Size, 4.3 Mm ID, 9 Mm OD |
|
1 | YES | |
| M4 X 0.7mm X 14mm, Hex Drive Rounded Head Screw, 18-8 SS |
|
1 | YES | |
| Valve Extension Harness |
|
1 | YES | |
| Upper Aluminum Pipe |
|
1 | YES | |
| Lower Silicone Pipe |
|
1 | YES | |
| Turbo Coupler |
|
1 | YES | |
| Turner 4" Universal Double Wall Exhaust Tip W/ Brushed Stainless Finish |
|
2 | YES | |
| Front Exhaust Section |
|
1 | YES | |
| Valved Rear Muffler |
|
1 | YES | |
| Midpipe Exhaust Section |
|
1 | YES |
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Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
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