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Your Vehicle 1975 Mercedes Benz 300D Base Sedan 115.114 L5 3.0L

Top - Assembled By ECS Service Kits - BMW E9X 335 N55

Whether it's preventative maintenance, routine service, or buttoning up your seasonal project, don't wait until the eleventh hour to finish up your wintertime vehicle work. Below we have assembled our top Assembled By ECS Kits for your BMW.

At ECS Tuning, we have the goods to keep your vehicle on the road. Assembled By ECS kits are offered in a large variety to mend nearly any ailing BMW. Get your project underway and rest assured knowing your vehicle is properly serviced.


Top - Assembled By ECS Service Kits

Fits:
E9X 335 N55

Genuine BMW Oil Change Kit / Inspection I - N52, N54, N55
Includes seven quarts of 5w-30 BMW synthetic engine oil, Hengst oil filter
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Featuring the standard synthetic oil BMW engineers had in mind
Brand: Assembled By ECS - Corporate Logo
ES#: 250700
Mfg#: N54OCI

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Availability:
In Stock
$105.70 USD
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This product is lifetime replacement eligible Partial Replacement
Genuine BMW Oil Change Kit / Inspection I
Includes seven quarts of BMW synthetic engine oil, Hengst oil filter and ECS magnetic drain plug for superior engine protection
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Brand: Assembled By ECS - Corporate Logo
ES#: 2075251
Mfg#: N54OCI

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Availability:
In Stock
$147.36 USD
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This product is lifetime replacement eligible Partial Replacement
Liqui Moly MolyGen Oil Change Kit / Inspection I
Includes seven quarts of Liqui Moly MolyGen 5w-40 synthetic engine oil, Hengst oil filter and ECS magnetic drain plug for superior engine protection
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Next generation synthetic oil with up to 15% lower coefficient of friction. Glows green under UV light fo
Brand: Assembled By ECS - Corporate Logo
ES#: 3432286
Mfg#: 11427566327KT9

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Availability:
In Stock
On SALE Save 10%
$138.99

This product was last offered at the strikethrough price on
05-15-2026

$125.21 USD
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This product is lifetime replacement eligible Partial Replacement
This product has been superseded to ES#3470581
Liqui Moly MolyGen Oil Change Kit / Inspection I
Includes seven quarts of Liqui Moly MolyGen 5w-40 synthetic engine oil, Hengst oil filter and new drain plug
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Next generation synthetic oil with up to 15% lower coefficient of friction. Glows green under UV light fo
Brand: Assembled By ECS - Corporate Logo
ES#: 3432280
Mfg#: 11427566327KT8

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Availability:
In Stock
$96.11 USD
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This product is lifetime replacement eligible Partial Replacement
Liqui Moly MolyGen Oil Change Kit / Inspection I
Includes seven liters of Liqui Moly MolyGen 5w-40 synthetic engine oil, Hengst oil filter and new drain plug
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Next generation synthetic oil with up to 15% lower coefficient of friction. Glows green under UV light fo
Brand: Assembled By ECS - Corporate Logo
ES#: 3470581
Mfg#: 11427566327MGKT

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Availability:
In Stock
On SALE Save 14%
$119.99

This product was last offered at the strikethrough price on
05-15-2026

$102.86 USD
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This product is lifetime replacement eligible Partial Replacement
Oil Filter Housing Gasket Replacement Kit
Includes everything for a oil filter housing gasket change and oil service
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Brand: Assembled By ECS - Corporate Logo
ES#: 2966442
Mfg#: 11427537293KT

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Availability:
In Stock
On SALE
$169.99

This product was last offered at the strikethrough price on
06-16-2026

$161.01 USD
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This product is lifetime replacement eligible Partial Replacement
Genuine BMW Oil Change Kit / Inspection I
Includes seven quarts of BMW synthetic engine oil, Mann oil filter and ECS magnetic drain plug for superior engine protection - plus ECS Billet Aluminum Oil Filter Cap to prevent damaged threads or rounded heads!
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Featuring the standard synthetic oil BMW engineers had in mind
Brand: Assembled By ECS - Corporate Logo
ES#: 2918838
Mfg#: 11427566327KT5

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Availability:
Ships on Aug 26, 2026
$295.76 USD
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This product is lifetime replacement eligible Partial Replacement
Genuine BMW Oil Change Kit / Inspection I
Includes seven quarts of BMW synthetic 0w-20 engine oil, Hengst oil filter
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Brand: Assembled By ECS - Corporate Logo
ES#: 3449965
Mfg#: 83212365954KT8

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Availability:
In Stock
$116.33 USD
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This product is lifetime replacement eligible Partial Replacement
"Dry" Inspection II Service Kit
Includes spark plugs and all filters - add your preferred fluids for a complete service
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Brand: Assembled By ECS - Corporate Logo
ES#: 2723809
Mfg#: N55IN2D

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Availability:
Ships in 2 Business Days
On SALE
$168.99

This product was last offered at the strikethrough price on
05-02-2026

$166.44 USD
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This product is lifetime replacement eligible Partial Replacement
BMW N55 Accessory Belt Kit
Everything you need to service your belt drive system - featuring all original equipment parts from INA and Continental!
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Brand: Assembled By ECS - Corporate Logo
ES#: 2713375
Mfg#: 11287582946KT2

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Availability:
In Stock
On SALE Save 12%
$212.99

This product was last offered at the strikethrough price on
03-19-2026

$187.17 USD
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This product is lifetime replacement eligible Lifetime Replacement
Accessory Belt Service Kit
Includes belt, tensioner and idler pulley
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Brand: Assembled By ECS - Corporate Logo
ES#: 3160979
Mfg#: 11287628661KT

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Availability:
In Stock
On SALE Save 21%
$128.99

This product was last offered at the strikethrough price on
01-03-2026

$102.48 USD
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This product is lifetime replacement eligible Lifetime Replacement
Ignition Service Kit
Everything you need to service your ignition system, featuring high quality aftermarket parts
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Brand: Assembled By ECS - Corporate Logo
ES#: 2608155
Mfg#: 12137594937NKT1

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Availability:
In Stock
$274.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Shifter Rebuild Kit
Everything you need to rebuild your shifter assembly
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Brand: Assembled By ECS - Corporate Logo
ES#: 2848175
Mfg#: 25117528407KT1KT

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Availability:
In Stock
On SALE
$283.99

This product was last offered at the strikethrough price on
05-02-2026

$257.90 USD
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This product is lifetime replacement eligible Lifetime Replacement
ECS Cooling System Refresh Kit - Level 1
An entry level cooling refresh kit - with high quality aftermarket components
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Brand: Assembled By ECS - Corporate Logo
ES#: 3170920
Mfg#: 11517588885KT3

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Availability:
Ships on Oct 26, 2026
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On SALE Save 25%
$747.99

This product was last offered at the strikethrough price on
01-03-2026

$561.83 USD
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This product is lifetime replacement eligible Partial Replacement
Thermostat Replacement Kit
Includes coolant
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Brand: Assembled By ECS - Corporate Logo
ES#: 2713411
Mfg#: 11537601158KT1

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Availability:
In Stock
On SALE Save 24%
$106.99

This product was last offered at the strikethrough price on
05-02-2026

$81.36 USD
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This product is lifetime replacement eligible Partial Replacement
Cup Kit/Coilover Installation Kit
Everything you need to install coilovers, shocks/struts, or a cup kit on your BMW
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Brand: Assembled By ECS - Corporate Logo
ES#: 2622813
Mfg#: 31306775098KT1

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Availability:
In Stock at Vendor
$464.26 USD
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This product is lifetime replacement eligible Lifetime Replacement
Cup Kit/Coilover Installation Kit
Everything you need to install coilovers, shocks/struts, or a cup kit on your BMW. Don't let weak mounts and corroded hardware yield less-than-positive results!
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Brand: Assembled By ECS - Corporate Logo
ES#: 2966635
Mfg#: 31306775098KT3

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Availability:
In Stock
On SALE
$344.99

This product was last offered at the strikethrough price on
05-02-2026

$343.96 USD
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This product is lifetime replacement eligible Lifetime Replacement
Rear Upper And Lower Shock Mount Kit
Includes all the necessary mounts to install new rear shocks
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Brand: Assembled By ECS - Corporate Logo
ES#: 2684818
Mfg#: 33526768544KT2

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Availability:
In Stock
On SALE
$135.00

This product was last offered at the strikethrough price on
01-03-2026

$125.65 USD
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This product is lifetime replacement eligible Lifetime Replacement
Sport Suspension Kit - H&R Sport Springs/Bilstein B8 Performance Shocks
Greater than the sum of its parts: premium, sporty ride, with 1.3-1.5"F/0.7-1.0" lowering. Lifetime warranty.
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Brand: Assembled By ECS - Corporate Logo
ES#: 3220590
Mfg#: 28878-2KT

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Availability:
In Stock
$1204.99 USD
This product is lifetime replacement eligible Lifetime Replacement
M3/1M Front and rear Control Arm Upgrade Kit
Featuring TRW M3 control arms plus ECS Performance Rear Trailing arms
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Brand: Assembled By ECS - Corporate Logo
ES#: 2794964
Mfg#: 001258ECS01KT

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Availability:
In Stock
On SALE
$1199.99

This product was last offered at the strikethrough price on
05-29-2026

$1162.79 USD
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This product is lifetime replacement eligible Lifetime Replacement
Front Suspension Refresh Kit - Level 1
M3 spec front control arms, HD end links and sway bar bushings for a partial front suspension rebuild - with high quality aftermarket components
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Brand: Assembled By ECS - Corporate Logo
ES#: 2601971
Mfg#: 31102283577RKT

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Availability:
Ships in 1-2 days
$723.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Rear Suspension Refresh Kit - Level 1
Rear shock mounts, trailing arm bushings, end links, and sway bar bushings for a partial rear suspension rebuild - with high quality aftermarket components
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand: Assembled By ECS - Corporate Logo
ES#: 2826293
Mfg#: 33526768544RKT2

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Availability:
In Stock
On SALE
$175.99

This product was last offered at the strikethrough price on
05-28-2026

$160.82 USD
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This product is lifetime replacement eligible Lifetime Replacement
Rear Upper Shock Mount Kit
Includes all the necessary mounts to install new rear shocks
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For vehicles without EDC suspension
Brand: Assembled By ECS - Corporate Logo
ES#: 3470009
Mfg#: 33506771738KT

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Availability:
In Stock
On SALE Save 30%
$49.92

This product was last offered at the strikethrough price on
01-03-2026

$34.89 USD
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on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Front Sway Bar Installation Kit
Everything you need to install a new OE front sway bar including HD end links
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Brand: Assembled By ECS - Corporate Logo
ES#: 2586308
Mfg#: FRTSWYBRINSKT

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Availability:
In Stock
$195.99 USD
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This product is lifetime replacement eligible Lifetime Replacement
Rear Suspension Refresh Kit - Level 1
Rear shock mounts, trailing arm bushings, HD end links, and sway bar bushings for a partial rear suspension rebuild - with high quality aftermarket components
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand: Assembled By ECS - Corporate Logo
ES#: 2601874
Mfg#: 33526768544RKT

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Availability:
In Stock
On SALE
$327.99

This product was last offered at the strikethrough price on
01-03-2026

$312.57 USD
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This product is lifetime replacement eligible Lifetime Replacement
Front & Rear Brake Service Kit
Featuring Zimmermann rotors and ECS DD23 Daily Driver ceramic pads - for the discerning enthusiast.
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Brand: Assembled By ECS - Corporate Logo
ES#: 2588538
Mfg#: 34216775678KT

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Availability:
In Stock
On SALE Save 25%
$757.94

This product was last offered at the strikethrough price on
05-02-2026

$571.87 USD
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This product is lifetime replacement eligible Lifetime Replacement
Performance Front Brake Service Kit - 340x30mm
Direct bolt-on 2pc cross-drilled and slotted replacement offering a 3.5lbs weight savings per rotor and ECS EP24 Enthusiast Performance pads for improved braking, handling, and ride quality!
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Brand: Assembled By ECS - Corporate Logo
ES#: 3536418
Mfg#: 014586ECSKT1

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Availability:
In Stock
On SALE
$1139.30

This product was last offered at the strikethrough price on
05-02-2026

$1046.66 USD
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This product is lifetime replacement eligible Lifetime Replacement
Performance Rear Brake Service Kit
Featuring ECS 2-piece semi-floating cross-drilled and slotted rotors with Hawk HPS pads
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Brand: Assembled By ECS - Corporate Logo
ES#: 3046849
Mfg#: 010830ECS01KT1

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Availability:
Ships on Jul 9, 2026
On SALE
$1261.99

This product was last offered at the strikethrough price on
05-02-2026

$1220.22 USD
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This product is lifetime replacement eligible Lifetime Replacement
Automatic Transmission Service Kit - Level 2
Includes all the necessary components for a complete transmission service with Liqui Moly fluid
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For vehicles equipped with automatic transmission GA6HP19Z
Brand: Assembled By ECS - Corporate Logo
ES#: 3623918
Mfg#: 24117571217LMKT

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Availability:
Back Ordered
On SALE Save 11%
$181.99

This product was last offered at the strikethrough price on
05-02-2026

$162.64 USD
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This product is lifetime replacement eligible Partial Replacement

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

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