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    • M112 3.2–3.7L V6 NA — C320 / CLK320 / E320
    • M112K 3.2L V6 Supercharged — C32 / SLK32
    • M113 5.0L V8 NA — E500 / CLS500
    • M113 5.4L V8 NA — C55 / CLK55 / SLK55
    • M113K 5.4L V8 Supercharged — E55 / CLS55 / SL55
    • M133 2.0L I4 Turbo — CLA45 / GLA45
    • M156 6.2L V8 NA — C63 / E63 / CLS63
    • M157 5.5L V8 BiTurbo — E63 / CLS63 / S63
    • M177 4.0L V8 BiTurbo — C63 / C63 S
    • M177 4.0L V8 BiTurbo — E63 / E63 S
    • M178 4.0L V8 BiTurbo — AMG GT / GT S / GT R
    • M256 3.0L I6 Turbo — E53 / GLE53 / GT53
    • M270 2.0L I4 Turbo — CLA250 / GLA250
    • M271 1.8L I4 Turbo — C250 / SLK250
    • M272 2.5–3.5L V6 NA — C300 / C350 / E350
    • M273 5.5L V8 NA — E550 / CLS550 / S550
    • M274 2.0L I4 Turbo — C300 / E300 / GLC300
    • M276 3.0L V6 BiTurbo — C43 / E43 / E450
    • M276 3.5L V6 NA — C350 / E350 / GLK350 / ML350
    • M278 4.7L V8 BiTurbo — E550 / CLS550 / S550
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BenzUnited Parts

  • Home
  • Performance
    • M112 3.2–3.7L V6 NA — C320 / CLK320 / E320
    • M112K 3.2L V6 Supercharged — C32 / SLK32
    • M113 5.0L V8 NA — E500 / CLS500
    • M113 5.4L V8 NA — C55 / CLK55 / SLK55
    • M113K 5.4L V8 Supercharged — E55 / CLS55 / SL55
    • M133 2.0L I4 Turbo — CLA45 / GLA45
    • M156 6.2L V8 NA — C63 / E63 / CLS63
    • M157 5.5L V8 BiTurbo — E63 / CLS63 / S63
    • M177 4.0L V8 BiTurbo — C63 / C63 S
    • M177 4.0L V8 BiTurbo — E63 / E63 S
    • M178 4.0L V8 BiTurbo — AMG GT / GT S / GT R
    • M256 3.0L I6 Turbo — E53 / GLE53 / GT53
    • M270 2.0L I4 Turbo — CLA250 / GLA250
    • M271 1.8L I4 Turbo — C250 / SLK250
    • M272 2.5–3.5L V6 NA — C300 / C350 / E350
    • M273 5.5L V8 NA — E550 / CLS550 / S550
    • M274 2.0L I4 Turbo — C300 / E300 / GLC300
    • M276 3.0L V6 BiTurbo — C43 / E43 / E450
    • M276 3.5L V6 NA — C350 / E350 / GLK350 / ML350
    • M278 4.7L V8 BiTurbo — E550 / CLS550 / S550
  • Shop by Part Type
    • Exhaust Upgrades
    • Downpipes
    • Exhaust Headers
    • Air Intakes & Filters
    • Turbochargers & Boost Hardware
    • Cooling Upgrades
    • Engine Parts & Internals
    • Drivetrain & Transmission
    • Suspension
    • Brakes & Braking Upgrades
    • Braided Brake Lines
    • Wheels & Spacers
    • Lighting
    • Used OEM Taillights
    • Parking Sensors & Parktronic
    • Interior Trim & Accessories
    • Exterior Styling & Carbon Fiber
    • Service Tools
    • Accessories & Merch
  • OEM Parts
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Performance Picks

Name the platform, we've got it.

  • Mercedes-Benz M113K ECU Tuning for E55, CLS55, SL55, S55, and G55 AMG

    M113K ECU Tuning – E55 AMG CLS55 SL55 S55 V8 Kompressor Upgrade

    M113K ECU Tuning – E55 AMG CLS55 SL55 S55 V8 Kompressor Upgrade

    Regular price $849.00 USD
    Regular price Sale price $849.00 USD
    Unit price /  per 
  • M157 K&N Performance Air Filters + Airbox Spacer Kit

    M157 K&N Performance Air Filters + Airbox Spacer Kit

    M157 K&N Performance Air Filters + Airbox Spacer Kit

    Regular price $300.00 USD
    Regular price Sale price $300.00 USD
    Unit price /  per 
  • Close-up of T-304 stainless steel M156 long tube performance headers with midpipes, designed for Mercedes-Benz AMG vehicles, showcasing precision welds and direct-fit W204 chassis compatibility.

    M156 Long Tube Headers with Midpipes for C63 AMG E63 CLS63

    Sale

    M156 Long Tube Headers with Midpipes for C63 AMG E63 CLS63

    Regular price $1,750.00 USD
    Regular price $1,999.00 USD Sale price $1,750.00 USD
    Unit price /  per 
    Sale
  • Mercedes W205 C63 C63S auxiliary heat exchanger with premium carbon fiber air baffle and mounting bracket

    Mercedes C63 AMG / C63 S Auxiliary Heat Exchanger + Carbon Fiber Air Baffle (W205 · M177)

    Mercedes C63 AMG / C63 S Auxiliary Heat Exchanger + Carbon Fiber Air Baffle (W205 · M177)

    Regular price $550.00 USD
    Regular price Sale price $550.00 USD
    Unit price /  per 

Precision-Engineered Catless Downpipes

Reduce Restriction, Increase Horsepower, Improve Response.

  • Stainless steel downpipes set for Mercedes AMG C43 C450 and E43 with M276 engine

    M276 Catless Downpipes for Mercedes-AMG C43 / E43 / E450 (2015–2023)

    Sale

    M276 Catless Downpipes for Mercedes-AMG C43 / E43 / E450 (2015–2023)

    5.0 / 5.0

    (1) 1 total reviews

    Regular price From $495.00 USD
    Regular price $595.00 USD Sale price From $495.00 USD
    Unit price /  per 
    Sale
  • Stainless steel downpipes set for Mercedes AMG C63 and C63S W205 with M177 engine

    M177 Catless Downpipes for Mercedes-AMG C63 & C63S (W205) 2015–2023

    Sale

    M177 Catless Downpipes for Mercedes-AMG C63 & C63S (W205) 2015–2023

    Regular price $595.00 USD
    Regular price $795.00 USD Sale price $595.00 USD
    Unit price /  per 
    Sale
  • Mercedes-AMG E53, CLS53, and GT53 M256 catless downpipe – stainless high-flow performance exhaust upgrade

    M256 Catless Downpipe – E53 CLS53 GT53 GT43 GLE53 GLE450 CLS450 S500 (2017–2020) 3.0L I6

    Sale

    M256 Catless Downpipe – E53 CLS53 GT53 GT43 GLE53 GLE450 CLS450 S500 (2017–2020) 3.0L I6

    5.0 / 5.0

    (2) 2 total reviews

    Regular price $549.00 USD
    Regular price $695.00 USD Sale price $549.00 USD
    Unit price /  per 
    Sale
  • Stainless steel catless downpipes for Mercedes E63 AMG E63S W213, performance exhaust upgrade by BenzUnited Parts

    M177 Catless Downpipes for Mercedes-AMG GT 63 (X290) & E63 / E63S (W213) – 304 Stainless Steel

    Sale

    M177 Catless Downpipes for Mercedes-AMG GT 63 (X290) & E63 / E63S (W213) – 304 Stainless Steel

    5.0 / 5.0

    (1) 1 total reviews

    Regular price From $649.00 USD
    Regular price $850.00 USD Sale price From $649.00 USD
    Unit price /  per 
    Sale
  • Mercedes C300 M274 catless downpipe – aggressive exhaust tone and quicker turbo spool with ECU tuning

    M274 Catless Downpipe for Mercedes C300 / E300 / GLC300 (W205 / W213 / X253) 2015–2021

    Sale

    M274 Catless Downpipe for Mercedes C300 / E300 / GLC300 (W205 / W213 / X253) 2015–2021

    Regular price $395.00 USD
    Regular price $495.00 USD Sale price $395.00 USD
    Unit price /  per 
    Sale
  • Heat-shielded catless downpipes for Mercedes E43 AMG, E450, and E400 with M276 engine, fits W213 sedan, C238 coupe, and A238 cabriolet

    M276 Heat-Shielded Catless Downpipes for C43 / E43 / E400 / E450

    Sale

    M276 Heat-Shielded Catless Downpipes for C43 / E43 / E400 / E450

    Regular price $649.00 USD
    Regular price $800.00 USD Sale price $649.00 USD
    Unit price /  per 
    Sale
  • Mercedes AMG GT M178 stainless steel downpipes set with flanges

    M178 Mercedes AMG GT Catless Downpipes – GT S / GT C / GT R (R190) 4.0L V8 BiTurbo

    Sale

    M178 Mercedes AMG GT Catless Downpipes – GT S / GT C / GT R (R190) 4.0L V8 BiTurbo

    Regular price From $795.00 USD
    Regular price $895.00 USD Sale price From $795.00 USD
    Unit price /  per 
    Sale
  • M157 Downpipes Closeup for Mercedes CLS63S AMG W218 4MATIC 2014-2017 Stainless Steel Exhaust Upgrade

    M157 Catless Downpipes – Mercedes E63 / E63 S W212 (2014–2017) & CLS63 S C218 (2014–2018) AMG 4MATIC

    Sale

    M157 Catless Downpipes – Mercedes E63 / E63 S W212 (2014–2017) & CLS63 S C218 (2014–2018) AMG 4MATIC

    Regular price From $849.00 USD
    Regular price $999.00 USD Sale price From $849.00 USD
    Unit price /  per 
    Sale
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Mercedes Performance & Technical Guides

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  • Mercedes M113 Timing Chain Guide – Symptoms, We...

    July 30, 2026

    The Mercedes-Benz M113 V8 is widely regarded as one of the most reliable engines AMG ever produced. However, like any high-mileage performance engine, it has a few known wear points....

    Mercedes M113 Timing Chain Guide – Symptoms, We...

    July 30, 2026

    The Mercedes-Benz M113 V8 is widely regarded as one of the most reliable engines AMG ever produced. However, like any high-mileage performance engine, it has a few known wear points....

  • Comparison of a factory Mercedes electronic diverter valve next to an aftermarket blow-off valve showing internal design differences

    BOV vs Diverter Valve on Mercedes Turbos: Sound...

    July 30, 2026

    Mercedes Blow-Off Valves vs Diverter Valves (BOV vs DV) Choosing between a blow-off valve and diverter valve for your Mercedes turbo? The difference isn’t sound—it’s boost control, consistency, and real-world...

    BOV vs Diverter Valve on Mercedes Turbos: Sound...

    July 30, 2026

    Mercedes Blow-Off Valves vs Diverter Valves (BOV vs DV) Choosing between a blow-off valve and diverter valve for your Mercedes turbo? The difference isn’t sound—it’s boost control, consistency, and real-world...

  • 722.6 Valve Body & Shift Solenoid Upgrades: Why...

    July 23, 2026

    Shift flare, slipping under boost, or limp mode after adding power to a C32, SLK32, E55, CLS55, SL55, S55, CL55, S600 or CL600? Here is why the 722.6 struggles with...

    722.6 Valve Body & Shift Solenoid Upgrades: Why...

    July 23, 2026

    Shift flare, slipping under boost, or limp mode after adding power to a C32, SLK32, E55, CLS55, SL55, S55, CL55, S600 or CL600? Here is why the 722.6 struggles with...

  • M113K Build Guide: Making Real, Repeatable Powe...

    July 23, 2026

    A complete M113K build guide for the E55, CLS55, SL55, S55, CL55 and G55 — supercharger pulley selection, clutched vs clutch delete, shorty vs mid-length headers and how to choose,...

    M113K Build Guide: Making Real, Repeatable Powe...

    July 23, 2026

    A complete M113K build guide for the E55, CLS55, SL55, S55, CL55 and G55 — supercharger pulley selection, clutched vs clutch delete, shorty vs mid-length headers and how to choose,...

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