2003 Mazda 6 Engine Internals

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Keep Your 2003 Mazda 6 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 2003 Mazda 6 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Standard Rod Bearing Sets, Crankshaft Seals, and Oversized Main Bearings. 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.

Top-Rated Engine Internals from Trusted Brands

Looking for a reliable Engine Internal? We’ve got you covered with options from brands you know and trust like Felpro and National. For example, Felpro Engine Internals start at just $16.99 with an average 4.6 star rating. National offer similar pricing and quality, backed by strong customer feedback. With over 12 reviews and a solid 5.0 star average, you can shop with confidence knowing other Mazda 6 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Mazda 6 Engine Internal at Advance Auto Parts is around $44.40, with a range that starts at $7.99 and goes up to $128.99. With 22 options in stock from 6 trusted brands, finding the right fit is easy. Popular picks like National Engine Crankshaft Seal, 3909, Dorman Harmonic Balancer Bolt, 926-885, and Sealed Power Engine Connecting Rod Bearing Set, 6-4395A start at just $23.99 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 2003 Mazda 6 in peak condition, inside and out.

Essential 2003 Mazda 6 Engine Internals

Felpro – Felpro Engine Crankshaft Seal Kit, BS 40729 (Part No.BS 40729)

Felpro Engine Crankshaft Seal Kit, BS 40729

from

$29.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
See More

Schaeffler – Schaeffler Shaft Seal, SS3386 (Part No.SS3386)

Schaeffler Shaft Seal, SS3386

from

$28.99
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.
See More

National – National Multi-Purpose Seal, 710837 (Part No.710837)

National Multi-Purpose Seal, 710837

from

$6.99
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.
See More

Dorman – Dorman Harmonic Balancer Bolt, 926-885 (Part No.926-885)

Dorman Harmonic Balancer Bolt, 926-885

from

$23.99
This engine harmonic balancer bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 7411MA (Part No.7411MA)

Sealed Power Engine Crankshaft Main Bearing Set, 7411MA

from

$128.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 7011MA (Part No.7011MA)

Sealed Power Engine Crankshaft Main Bearing Set, 7011MA

from

$71.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 7411MA .25MM (Part No.7411MA .25MM)

Sealed Power Engine Crankshaft Main Bearing Set, 7411MA .25MM

from

$128.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 4-4930A .50MM (Part No.4-4930A .50MM)

Sealed Power Engine Connecting Rod Bearing Set, 4-4930A .50MM

from

$56.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 4-4930A (Part No.4-4930A)

Sealed Power Engine Connecting Rod Bearing Set, 4-4930A

from

$67.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 6-4395A .25MM (Part No.6-4395A .25MM)

Sealed Power Engine Connecting Rod Bearing Set, 6-4395A .25MM

from

$45.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 6-4395A (Part No.6-4395A)

Sealed Power Engine Connecting Rod Bearing Set, 6-4395A

from

$48.49
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Schaeffler – Schaeffler Repair Sleeve, SR3506 (Part No.SR3506)

Schaeffler Repair Sleeve, SR3506

from

$39.99
The FAG repair sleeve is a precision element that provides additional sealing for damaged shafts. Made of heat-treated stainless steel, the FAG repair sleeve signifcantly increases the life of the shaft and prevents premature wear. Since no shaft removal or machining is required during the repair, the repair sleeve is a cost effective repair solution to protect damaged surfaces.
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Sealed Power – Sealed Power Engine Connecting Rod Bearing, 4395A .25MM (Part No.4395A .25MM)

Sealed Power Engine Connecting Rod Bearing, 4395A .25MM

from

$8.89
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 6-4395A .50MM (Part No.6-4395A .50MM)

Sealed Power Engine Connecting Rod Bearing Set, 6-4395A .50MM

from

$45.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing, 4395A (Part No.4395A)

Sealed Power Engine Connecting Rod Bearing, 4395A

from

$9.39
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Most Popular Standard Rod Bearing Sets for 2003 Mazda 6s

Enhance your 2003 Mazda 6 with one of the 4 Standard Rod Bearing Sets we have in stock, starting at just $45.99.

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 6-4395A (Part No.6-4395A)

Sealed Power Engine Connecting Rod Bearing Set, 6-4395A

from

$48.49
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 4-4930A (Part No.4-4930A)

Sealed Power Engine Connecting Rod Bearing Set, 4-4930A

from

$67.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 4-4930A .50MM (Part No.4-4930A .50MM)

Sealed Power Engine Connecting Rod Bearing Set, 4-4930A .50MM

from

$56.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Connecting Rod Bearing Set, 6-4395A .25MM (Part No.6-4395A .25MM)

Sealed Power Engine Connecting Rod Bearing Set, 6-4395A .25MM

from

$45.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Best-Selling 2003 Mazda 6 Crankshaft Seals

Upgrade your 6 with one of our 10 best-selling Crankshaft Seals, earning an average 5 stars rating across 6 reviews.

Felpro – Felpro Engine Crankshaft Seal Kit, TCS 46114 (Part No.TCS 46114)

Felpro Engine Crankshaft Seal Kit, TCS 46114

from

$16.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
See More

National – National Engine Crankshaft Seal, 3909 (Part No.3909)

National Engine Crankshaft Seal, 3909

from

$31.49
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.
See More

Felpro – Felpro Engine Crankshaft Seal Kit, TCS 46132 (Part No.TCS 46132)

Felpro Engine Crankshaft Seal Kit, TCS 46132

from

$29.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
See More

National – National Multi-Purpose Seal, 710600 (Part No.710600)

National Multi-Purpose Seal, 710600

from

$101.99
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.
See More

National – National Multi-Purpose Seal, 5277 (Part No.5277)

National Multi-Purpose Seal, 5277

from

$56.99
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.
See More

Victor Reinz – Victor Reinz Engine Crankshaft Seal Kit, 19-10073-01 (Part No.19-10073-01)

Victor Reinz Engine Crankshaft Seal Kit, 19-10073-01

from

$30.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
See More

Victor Reinz – Victor Reinz Engine Crankshaft Seal Kit, 19-10113-01 (Part No.19-10113-01)

Victor Reinz Engine Crankshaft Seal Kit, 19-10113-01

from

$29.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
See More

Schaeffler – Schaeffler Shaft Seal, SS3386 (Part No.SS3386)

Schaeffler Shaft Seal, SS3386

from

$28.99
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.
See More

Victor Reinz – Victor Reinz Engine Crankshaft Seal Kit, 18-10114-01 (Part No.18-10114-01)

Victor Reinz Engine Crankshaft Seal Kit, 18-10114-01

from

$24.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
See More

Schaeffler – Schaeffler General Seal, SS2506 (Part No.SS2506)

Schaeffler General Seal, SS2506

from

$7.99
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.
See More

Top-Quality Oversized Main Bearings for 2003 Mazda 6s

Choose a high-quality OEM or aftermarket Oversized Main Bearing for Mazda 6s and enjoy top-notch performance from $71.99.

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 7011MA (Part No.7011MA)

Sealed Power Engine Crankshaft Main Bearing Set, 7011MA

from

$71.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 7411MA .25MM (Part No.7411MA .25MM)

Sealed Power Engine Crankshaft Main Bearing Set, 7411MA .25MM

from

$128.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Sealed Power – Sealed Power Engine Crankshaft Main Bearing Set, 7411MA (Part No.7411MA)

Sealed Power Engine Crankshaft Main Bearing Set, 7411MA

from

$128.99
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Our Top Pick for a 2003 Mazda 6 Standard Individual Rod Bearing

Invest in a durable Standard Individual Rod Bearing for your 2003 Mazda, knowing you’re getting trusted brands and expert craftsmanship.

Sealed Power – Sealed Power Engine Connecting Rod Bearing, 4395A (Part No.4395A)

Sealed Power Engine Connecting Rod Bearing, 4395A

from

$9.39
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
See More

Our Crankshaft Bolts for 2003 Mazda 6s

Make a smart move for your 2003 Mazda 6 with our Crankshaft Bolt for $23.99.

Dorman – Dorman Harmonic Balancer Bolt, 926-885 (Part No.926-885)

Dorman Harmonic Balancer Bolt, 926-885

from

$23.99
This engine harmonic balancer bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.
See More

Top-Rated Engine Internal Brands For Your 2003 Mazda 6

When it comes to finding the perfect Engine Internal for your 2003 Mazda 6, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 6 trusted brands. We carry the most popular Engine Internal brands including Felpro and National, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $16.99. Purchasing a Engine Internal from us here at Advance Auto Parts is a smart move for both you and your 2003 Mazda 6, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 2003 Mazda 6 Engine Internals

If you’re looking for a top-quality Engine Internal for your 2003 Mazda 6, Advance Auto Parts has exactly what you need with our selection of Felpro Engine Internals. We have 1 Felpro Engine Internals in stock for this fitment, all known for their durability and precision fit. With prices starting at just $16.99, you’ll find the perfect Engine Internal for your needs and budget. Felpro Engine Internals for the 2003 Mazda 6 come highly rated, with over 4 customer reviews and an impressive average rating of 4.6 stars. Choosing a Felpro Engine Internal from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Felpro Engine Crankshaft Seal Kit, TCS 46114
from $16.99
(4)
Felpro Engine Crankshaft Seal Kit, TCS 46114
“Fit and function like OEM Ford”

Top-Quality National 2003 Mazda 6 Engine Internals

For those in search of a high-quality Engine Internal for their 2003 Mazda 6, Advance Auto Parts offers a great selection of National Engine Internals. With 1 National Engine Internals in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Engine Internals start at just $31.49, giving you a range of options to suit your budget. Backed by over 2 customer ratings and an average rating of 4.3 stars, National Engine Internals provide both reliability and excellent performance. Choosing a National Engine Internal from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
National Engine Crankshaft Seal, 3909
from $31.49
(2)
National Engine Crankshaft Seal, 3909
“IT HELPS WHEN GOOD PARTS ARE NEARBY.”

FAQs for 2003 Mazda 6 Engine Internals

What are the best-selling Engine Internals for 2003 Mazda 6s?

Out of 22 Engine Internals that fit 2003 Mazda 6s, the following parts are the top sellers:

What’s the price range for 2003 Mazda 6 Engine Internals?

The prices of Engine Internals for the 2003 Mazda 6 range from $7.99 up to $128.99 for the most premium parts.

What is the average price of an Engine Internal for a 2003 Mazda 6?

The average price for Engine Internals for the 2003 Mazda 6 is $44.40. 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 Mazda 6 model years?

Yes, we carry Engine Internals for 14 model years of Mazda 6s between 2004 and 2019. The following model years are the most popular for Engine Internal purchases: 2019, 2017, 2016, 2015, 2014, 2013, 2012, 2011, and 2010.

What are the cheapest Engine Internals for my 2003 Mazda 6?

The cheapest 2003 Mazda 6 Engine Internals we carry are:

Does Advance Auto Parts sell Engine Internals for any other 2003 Mazda models?

Yes. We stock Engine Internals for 6 other popular 2003 Mazda models. Some of the most popular are 2003 MPV Engine Internals, 2003 B4000 Engine Internals, 2003 B2300 Engine Internals, 2003 Protege Engine Internals, and 2003 B3000 Engine Internals.

What are the top-rated Engine Internals that fit the 2003 Mazda 6?

The one 2003 Mazda 6 Engine Internal we have in stock is the Schaeffler General Seal, SS2506. It costs $7.99.

What types of Engine Internals do you sell for my 2003 Mazda 6?

As of 8/2/26, these are some of the most in-demand types of Engine Internals for a 2003 Mazda 6:

Can I get help with 2003 Mazda 6 Engine Internal orders?

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

What is your return policy for Mazda 6 Engine Internals?

Advance Auto Parts keeps returns simple. For new Mazda 6 Engine Internals and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.