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Your Vehicle 1978 Mercedes Benz 240D Base Sedan 123.123 L4 2.4L

1978 Mercedes Benz 240D Base Sedan 123.123 L4 2.4L Engine Parts & Accessories

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ES#4609124 - 38565 - Stanadyne Performance All Season Fuel Additive - 16oz - Protects your diesel engine and restores engine performance. Includes cold weather protection. - Stanadyne - Audi BMW Volkswagen Mercedes Benz Porsche

Protects your diesel engine and restores engine performance. Includes cold weather protection. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Stanadyne - Corporate Logo
ES#:
4609124
Mfg#:
38565
Ships in 2 Business Days
$13.99 USD
Free Shipping
on orders $49 and up
ES#2748881 - 0001802509KT - W123 & W126 Diesel Oil Change Kit 15w-40 - Everything you need to perform an engine oil service - Genuine Mercedes Benz - Mercedes Benz

Everything you need to perform an engine oil service affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
2748881
Mfg#:
0001802509KT
Ships in 4 Business Days
$115.98

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

$111.15 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
ES#2894097 - 0015459832 - Glow Plug Relay - Pre-glow time relay for the glow plugs - Vemo - Mercedes Benz

Pre-glow time relay for the glow plugs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
2894097
Mfg#:
0015459832
Special Order: No Guaranteed ETA
$107.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3421920 - 000010030164 - Engine Oil Cap - Includes new seal - Genuine Mercedes Benz - Mercedes Benz

Includes new seal affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
3421920
Mfg#:
000010030164
Ships in 3 Business Days
5% off MSRP

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

$19.00

This product was last offered at the strikethrough price on
01-06-2026

$17.99 USD
Free Shipping
on orders $49 and up
ES#1616089 - 0029973430 - Oil Drain Plug - Priced Each - Does not include new sealing washer - Genuine Mercedes Benz - Mercedes Benz

Does not include new sealing washer affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1616089
Mfg#:
0029973430
In Stock
$5.98

This product was last offered at the strikethrough price on
06-02-2026

$5.96 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3619900 - D8RVS - Diesel Engine Treatment - 6-9 Quart Capacity - A triboceramic treatment to restore and protect metal surfaces inside the engine - RVS Technology - Audi BMW Volkswagen Mercedes Benz Porsche

A triboceramic treatment to restore and protect metal surfaces inside the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
RVS Technology - Corporate Logo
ES#:
3619900
Mfg#:
D8RVS
Ships in 3 Business Days
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2748882 - 0001802509KT2 - W123 & W126 Diesel Oil Change Kit 15w-40 - Everything you need to perform an engine oil service - Mobil Delvac - Mercedes Benz

Everything you need to perform an engine oil service affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mobil Delvac - Corporate Logo
ES#:
2748882
Mfg#:
0001802509KT2
Ships in 1-2 days
$102.99

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

$97.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
ES#8994 - 6150160080 - Valve Cover Gasket - Located between the cylinder head and the valve cover - Victor Reinz - Mercedes Benz

Located between the cylinder head and the valve cover affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
8994
Mfg#:
6150160080
Back Ordered
$99.99

This product was last offered at the strikethrough price on
05-07-2026

$96.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1618644 - 005997699264 - Accessory Belt - 12.5x1030 - V-Belt - Genuine Mercedes Benz - Mercedes Benz

12.5x1030 - V-Belt affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Alternator And Water Pump Belt - From Engine: 086379, Or From Engine: 027799

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1618644
Mfg#:
005997699264
Ships in 4 Business Days
7% off MSRP

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

$100.00

This product was last offered at the strikethrough price on
01-06-2026

$92.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2697671 - 6150170060 - Prechamber Seal Ring - Priced Each - Standard Size - Elring - Mercedes Benz

Standard Size affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
2697671
Mfg#:
6150170060
In Stock at Vendor
$3.99

This product was last offered at the strikethrough price on
05-07-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2803535 - 1232420413 - Transmission Mount - Secures the transmission to the crossmember - Rein - Mercedes Benz

Secures the transmission to the crossmember affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803535
Mfg#:
1232420413
Ships in 4 Business Days
$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2747991 - 6160105221 - Cylinder Head Gasket Set - All necessary gaskets for cylinder head replacement - Victor Reinz - Mercedes Benz

All necessary gaskets for cylinder head replacement affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
2747991
Mfg#:
6160105221
In Stock at Vendor
$88.99

This product was last offered at the strikethrough price on
05-07-2026

$86.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1642474 - 1164701475 - Fuel Feed Hose - From in-tank filter to fuel feed line - Genuine Mercedes Benz - Mercedes Benz

From in-tank filter to fuel feed line affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1642474
Mfg#:
1164701475
Ships in 4 Business Days
9% off MSRP

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

$22.99

This product was last offered at the strikethrough price on
12-29-2025

$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#248412 - 0000908850 - Diesel Primer Pump - Improved design over your factory unit - Bosch - Mercedes Benz

Improved design over your factory unit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
248412
Mfg#:
0000908850
In Stock at Vendor
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1817683 - 6150521016 - Timing Chain Guide Rail - Priced Each - Lower Outer Guide - Genuine Mercedes Benz - Mercedes Benz

Lower Outer Guide affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1817683
Mfg#:
6150521016
Ships in 4 Business Days
6% off MSRP

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

$78.00

This product was last offered at the strikethrough price on
06-12-2026

$72.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2622496 - 0021547206 - Voltage Regulator - Internal type - Bolts to the back of the alternator - Bosch - Mercedes Benz

Internal type - Bolts to the back of the alternator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2622496
Mfg#:
0021547206
Back Ordered
$73.99

This product was last offered at the strikethrough price on
05-07-2026

$71.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Parts & Accessories

Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.

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