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Top Mods for the Mercedes-Benz W204 C-Class 2008-2014

The W204 C-Class is one of the most rewarding Mercedes-Benz platforms to modify. Rear-wheel drive balance, a wide range of engines from the turbocharged C250 to the 6.2L V8 C63 AMG, and a stiff chassis mean every upgrade can be felt from behind the wheel. We have been busy developing new ECS Tuning parts for the W204, and we have gathered them here with the upgrades W204 owners choose most. No maintenance parts, just mods.


New ECS parts and owner favorites for your W204 build

For Your 2008-2014 Mercedes-Benz C250, C300, C350 and C63 AMG

W204 C-Class Smoked Amber LED Bumper Side Marker Lights - Set
Featuring Amber LED Smoked Side Marker Lights for your W204!
Brand: Depo - Corporate Logo
ES#: 3662924
Mfg#: 340-1419P3B-S

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Availability:
Ships on Dec 1, 2026
$97.99 USD
Free Shipping Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
W204 Facelift C63 V Style Carbon Fiber Front Lip
Add some aggressive styling to your Mercedes!
Brand: Suvneer - Corporate Logo
ES#: 4690950
Mfg#: W204C63CFLIP2

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Availability:
In Stock
Limited Qty Sale
$595.00

This product was last offered at the strikethrough price on
11-07-2026

$505.00 USD
Free Shipping Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
DTM Designed W204 Preface Carbon Fiber Diffuser
Add some aggressive styling to your Mercedes-Benz!
Brand: Suvneer - Corporate Logo
ES#: 4691040
Mfg#: W204CFDIF-DTM

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Availability:
Ships in 6 Business Days
$660.00 USD
Free Shipping Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
E55 / E63 / C63 / SL55 / SLK55 / SL65 AMG Rear Limited Slip Differential
Put all your power to the ground!
Brand: Wavetrac - Corporate Logo
ES#: 3006294
Mfg#: 48309185WK

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Availability:
In Stock
7% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.


$1395.00
$1295.00 USD
Free Shipping Free Shipping
Gruppe M Carbon Fiber Intake System
Elegant looks with enhanced performance!
Brand: Gruppe M - Corporate Logo
ES#: 3193049
Mfg#: FRI-0405

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Availability:
Special Order: No Guaranteed ETA
$2318.99 USD
This product is lifetime replacement eligible Lifetime Replacement
M156 Weistec ROW Airbox Set Mercedes-Benz 63 AMG
Gains 5-10 Horsepower, Includes New Mass Air Flow Sensors
Brand: Weistec - Corporate Logo
ES#: 4667316
Mfg#: 01-156-00743-7

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Availability:
Ships in 2 Business Days
$704.00 USD
Free Shipping Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Billet Idler Pulleys Mercedes-Benz M156 63 AMG
Upgraded Weistec Idler Pulley Kit
Brand: Weistec - Corporate Logo
ES#: 4667306
Mfg#: 01-000-00093-3

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Availability:
In Stock
Limited Qty Sale
$649.00

This product was last offered at the strikethrough price on
11-07-2026

$610.99 USD
Free Shipping Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Billet Aluminum 5 Piece Idler Pulley Upgrade - M156
Eliminate weak factory plastic idlers with the UPD M156 Billet Idler Set - a high-strength CNC aluminum upgrade built for smoother operation, extreme durability, and long-term AMG reliability.
Brand: Ultimate Performance And Design  - Corporate Logo
ES#: 5470401
Mfg#: M156IDLER

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Availability:
Ships in 3 Business Days
$495.00 USD
Free Shipping Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
Mercedes-Benz AMG 63 M156 Weistec Oil & Air Separator System
Keep oil out of the intake! Featuring billet PCV adapter fittings for easy bolt on performance!
Brand: Weistec - Corporate Logo
ES#: 4667311
Mfg#: 01-000-00383-5

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Availability:
Ships in 2 Business Days
$699.00 USD
Free Shipping Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Weistec Mercedes-Benz M156 6.2L 63 AMG Heat Exchanger
All Aluminum Construction & Factory Pressure Tested!
Brand: Weistec - Corporate Logo
ES#: 4714608
Mfg#: 01-000-00045-0

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Availability:
Ships in 2 Business Days
$599.00 USD
Free Shipping Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
Weistec Stage 1 & 2 M156 AMG Supercharger Belt
Replacement Belt for Weistec Stage 1 & 2 M156 Supercharger Systems
Brand: Weistec - Corporate Logo
ES#: 4715464
Mfg#: 02-156-00389-4

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Availability:
Ships on Dec 8, 2026
$109.00 USD
Free Shipping Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Upgraded Fuel Injectors 600cc - Set Of 8
Featuring Advanced Fuel Dynamics x Deatschwerks 600cc Injectors! Max Wheel Horsepower Supported on E85 of 750hp on naturally aspirated engines & 690hp on forced induction engines!
Brand:
Advanced Fuel Dynamics
ES#: 4716282
Mfg#: DW-17MX-01-0600-

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Availability:
Ships in 4 Business Days
$829.00 USD
Free Shipping Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
Stainless Steel Twin 3" Cat Back Performance Exhaust System
Unlock your C63's true exhaust sound output!
Brand: XForce - Corporate Logo
ES#: 4389134
Mfg#: ES-C63-CBS

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Availability:
Ships in 2 Business Days
$1259.99 USD
This product is lifetime replacement eligible Lifetime Replacement
Armytrix Valvetronic Cat-Back Exhaust System - Quad Chrome Tips
Gains up to +18 horsepower with an additional +18 ft lbs of torque with a legendary exhaust note!
Brand: Armytrix - Corporate Logo
ES#: 3675978
Mfg#: MB046-QS19C

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Availability:
Special Order: No Guaranteed ETA
$4592.00 USD
Free Shipping Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
W204 C63 AMG V8 Performance X-Pipe
Let your C63 breath as it was meant to be to unleash one of the best sounding V8's ever made
Brand: Supersprint - Corporate Logo
ES#: 3055910
Mfg#: 846613

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Availability:
Ships on Feb 18, 2027
$1163.99 USD
Free Shipping Free Shipping
VTA Performance Blow-Off Valve
Direct-fit performance solution with aggressive blow-off sound
Brand: Go Fast Bits - Corporate Logo
ES#: 3979169
Mfg#: T9458

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Availability:
In Stock
10% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.


$229.99
$206.99 USD
Free Shipping Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
DV+ Performance Diverter Valve
Direct-fit performance solution for the OE diverter valve
Brand: Go Fast Bits - Corporate Logo
ES#: 4845577
Mfg#: T9388

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Availability:
In Stock
10% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.


$280.99
$252.99 USD
Free Shipping Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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Manufacturer names and/or part numbers are used only for identification purposes.

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