1978 Mercedes-Benz 300SD Engine Internals

Keep Your 1978 Mercedes-Benz 300SD in Top Shape with Quality Engine Internals

Whether you’re repairing or upgrading your Engine Internal, using high-quality parts is key to keeping your 1978 Mercedes-Benz 300SD looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Crankshaft Seals. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 1978 Mercedes-Benz 300SD Engine Internal at Advance Auto Parts is around $17.78, with a range that starts at $13.02 and goes up to $22.54. With 2 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Elring Crankshaft Seal and Elring Crankshaft Seal start at just $13.02 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Engine Internal, don’t forget to check out other key components like Engine Gaskets and Seals and Engine Timing Parts. At Advance Auto Parts, we’re here to help you keep your 1978 Mercedes-Benz 300SD in peak condition, inside and out.

Essential 1978 Mercedes-Benz 300SD Engine Internals

National – Multi Purpose Seal (Part No.710608)

Multi Purpose Seal

from

$11.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
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National – Multi Purpose Seal (Part No.710288)

Multi Purpose Seal

from

$34.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

Elring – Elring Crankshaft Seal (Part No.A806025708ELR)

Elring Crankshaft Seal

from

$13.02
All-around safety and reliability: Elring oil seals are manufactured for a wide range of applications. Whether they are installed in camshafts, crankshafts or axles, the high-precision seals are guaranteed to offer outstanding performance. Elring oil seals are made from tailor-made elastomer compounds to ensure excellent functionality and a long service life. They are available in various sizes and are supplied with detailed installation instructions.

Product Features:
  • Premium-quality materials such as FPM, ACM and PTFE for superior operational reliability
  • Various designs specifically adapted to the area of application ensure excellent functionality and performance
  • High-performance FPM guarantees optimum leak tightness
See More

Elring – Elring Crankshaft Seal (Part No.A8060162723ELR)

Elring Crankshaft Seal

from

$25.56
All-around safety and reliability: Elring oil seals are manufactured for a wide range of applications. Whether they are installed in camshafts, crankshafts or axles, the high-precision seals are guaranteed to offer outstanding performance. Elring oil seals are made from tailor-made elastomer compounds to ensure excellent functionality and a long service life. They are available in various sizes and are supplied with detailed installation instructions.

Product Features:
  • Premium-quality materials such as FPM, ACM and PTFE for superior operational reliability
  • Various designs specifically adapted to the area of application ensure excellent functionality and performance
  • High-performance FPM guarantees optimum leak tightness
See More

Elring – Elring Crankshaft Seal (Part No.A806070399ELR)

Elring Crankshaft Seal

from

$22.54
All-around safety and reliability: Elring oil seals are manufactured for a wide range of applications. Whether they are installed in camshafts, crankshafts or axles, the high-precision seals are guaranteed to offer outstanding performance. Elring oil seals are made from tailor-made elastomer compounds to ensure excellent functionality and a long service life. They are available in various sizes and are supplied with detailed installation instructions.

Product Features:
  • Premium-quality materials such as FPM, ACM and PTFE for superior operational reliability
  • Various designs specifically adapted to the area of application ensure excellent functionality and performance
  • High-performance FPM guarantees optimum leak tightness
See More

Corteco – Crankshaft Seal (Part No.A806012421CFW)

Crankshaft Seal

from

$36.47
Crankshaft Seal

Elring – Elring Crankshaft Seal (Part No.A806031105ELR)

Elring Crankshaft Seal

from

$28.65
All-around safety and reliability: Elring oil seals are manufactured for a wide range of applications. Whether they are installed in camshafts, crankshafts or axles, the high-precision seals are guaranteed to offer outstanding performance. Elring oil seals are made from tailor-made elastomer compounds to ensure excellent functionality and a long service life. They are available in various sizes and are supplied with detailed installation instructions.

Product Features:
  • Premium-quality materials such as FPM, ACM and PTFE for superior operational reliability
  • Various designs specifically adapted to the area of application ensure excellent functionality and performance
  • High-performance FPM guarantees optimum leak tightness
See More

Most Popular Crankshaft Seals for 1978 Mercedes-Benz 300SDs

Enhance your 1978 Mercedes-Benz 300SD with one of the 2 Crankshaft Seals we have in stock, starting at just $13.02.

Elring – Elring Crankshaft Seal (Part No.A806070399ELR)

Elring Crankshaft Seal

from

$22.54
All-around safety and reliability: Elring oil seals are manufactured for a wide range of applications. Whether they are installed in camshafts, crankshafts or axles, the high-precision seals are guaranteed to offer outstanding performance. Elring oil seals are made from tailor-made elastomer compounds to ensure excellent functionality and a long service life. They are available in various sizes and are supplied with detailed installation instructions.

Product Features:
  • Premium-quality materials such as FPM, ACM and PTFE for superior operational reliability
  • Various designs specifically adapted to the area of application ensure excellent functionality and performance
  • High-performance FPM guarantees optimum leak tightness
See More

Elring – Elring Crankshaft Seal (Part No.A806025708ELR)

Elring Crankshaft Seal

from

$13.02
All-around safety and reliability: Elring oil seals are manufactured for a wide range of applications. Whether they are installed in camshafts, crankshafts or axles, the high-precision seals are guaranteed to offer outstanding performance. Elring oil seals are made from tailor-made elastomer compounds to ensure excellent functionality and a long service life. They are available in various sizes and are supplied with detailed installation instructions.

Product Features:
  • Premium-quality materials such as FPM, ACM and PTFE for superior operational reliability
  • Various designs specifically adapted to the area of application ensure excellent functionality and performance
  • High-performance FPM guarantees optimum leak tightness
See More

FAQs for 1978 Mercedes-Benz 300SD Engine Internals

What are the best-selling Engine Internals for 1978 Mercedes-Benz 300SDs?

Out of 2 Engine Internals that fit 1978 Mercedes-Benz 300SDs, the following parts are the top sellers:

What’s the price range for 1978 Mercedes-Benz 300SD Engine Internals?

The prices of Engine Internals for the 1978 Mercedes-Benz 300SD range from $13.02 up to $22.54 for the most premium parts.

What is the average price of an Engine Internals Engine Internal for a 1978 Mercedes-Benz 300SD?

The average price for Engine Internals for the 1978 Mercedes-Benz 300SD is $17.78. Keep in mind the variety of part types within our Engine Internal category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Engine Internals for other Mercedes-Benz 300SD model years?

Yes, we carry Engine Internals for 8 model years of Mercedes-Benz 300SDs between 1979 and 1993. The following model years are the most popular for Engine Internal purchases: 1993, 1992, 1985, 1984, 1983, 1982, 1981, 1980, and 1979.

What are the cheapest Engine Internals for my 1978 Mercedes-Benz 300SD?

The cheapest 1978 Mercedes-Benz 300SD Engine Internals we carry are:

Does Advance Auto Parts sell Engine Internals for any other 1978 Mercedes-Benz models?

Yes. We stock Engine Internals for 9 other popular 1978 Mercedes-Benz models. Some of the most popular are 1978 230 Engine Internals, 1978 280SE Engine Internals, 1978 450SEL Engine Internals, 1978 300D Engine Internals, and 1978 280E Engine Internals.

What types of Engine Internals do you sell for my 1978 Mercedes-Benz 300SD?

We currently have just 1 Engine Internal in stock for a 1978 Mercedes-Benz 300SD, and as of 4/10/25, it is a Crankshaft Seal.

Can I get help with 1978 Mercedes-Benz 300SD Engine Internal orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercedes-Benz Engine Internals and more.

What is your return policy for Mercedes-Benz 300SD Engine Internals?

Advance Auto Parts keeps returns simple. For new Mercedes-Benz 300SD Engine Internals and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.