1968 Dodge M300 Performance Engines

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Keep Your 1968 Dodge M300 in Top Shape with Quality Performance Engines

Whether you’re repairing or upgrading your Performance Engine, using high-quality parts is key to keeping your 1968 Dodge M300 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Valve Cover Gasket Sets, Performance Engine Coolant Thermostats, and Performance Intake Manifolds. 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 1968 Dodge M300 Performance Engine at Advance Auto Parts is around $261.29, with a range that starts at $18.79 and goes up to $593.99. With 27 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1213, FEL-PRO Performance PERFORMANCE OIL PAN GASKET SET, 1806, and Mr. Gasket High Performance Thermostat, 4366 start at just $21.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Performance Engine, don’t forget to check out other key components like Performance Fuel Systems and Performance Ignition Products. At Advance Auto Parts, we’re here to help you keep your 1968 Dodge M300 in peak condition, inside and out.

Find Your Specific 1968 Dodge M300 Performance Engines

Looking for the perfect Performance Engine for your 1968 Dodge M300? You’re in the right place. Below, you’ll find links to various types of Performance Engines that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Performance Engines, ensuring durability and a precise fit for your Dodge M300. Whether you’re driving a 1968 model or another popular model year like 1969, 1970, 1971, 1972, 1973, and 1974, we’ve got you covered. Purchasing Performance Engines from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Performance Engines that fit your vehicle.

Essential 1968 Dodge M300 Performance Engines

Competition Cams – Competition Cams High Energy 218/218 Hydraulic Flat Cam and Lifter Kit, CL20-212-2 (Part No.CL20-212-2)

Competition Cams High Energy 218/218 Hydraulic Flat Cam and Lifter Kit, CL20-212-2

from

$382.99
Ideal for use with mainly stock components like rocker arms, intake manifolds, cylinder heads, compression ratio, torque converters and rear gear ratios, the High Energy camshaft grind family is a great choice for street performance applications.
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Competition Cams – Competition Cams Xtreme Energy 218/224 Hydraulic Flat Cam K-Kit, K20-222-3 (Part No.K20-222-3)

Competition Cams Xtreme Energy 218/224 Hydraulic Flat Cam K-Kit, K20-222-3

from

$593.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts.
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Competition Cams – Competition Cams Xtreme Energy 224/230 Hydraulic Flat Cam K-Kit, K21-223-4 (Part No.K21-223-4)

Competition Cams Xtreme Energy 224/230 Hydraulic Flat Cam K-Kit, K21-223-4

from

$712.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts.
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Mr. Gasket – Mr. Gasket Ultra Seal: Valve Cover Gasket Set, 5877 (Part No.5877)

Mr. Gasket Ultra Seal: Valve Cover Gasket Set, 5877

from

$40.29
Ultra-Seal is Mr. Gasket premium valve cover gasket material. It’s manufactured from a high density cork and rubber blend to help seal minor flange irregularites and eliminate oil leakage. It creates a positive seal by controlled swelling of the gasket material when exposed to hot oil. For original equipment replacement, high performance street, drag race and oval track use. Sold as a pair, these gaskets are .187 inch thick.
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(1 reviews)
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Mr. Gasket – Mr. Gasket Performance Valve Cover Gaskets, 378 (Part No.378)

Mr. Gasket Performance Valve Cover Gaskets, 378

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$44.39
Mr. Gasket Performance Valve Cover Gaskets are high-density cork/rubber blend gaskets that use evenly sized cork particles distributed evenly throughout the rubber binder. The result is a compressible valve cover gasket without leak paths. These gaskets create a positive seal by controlled swelling of the gasket material when exposed to hot engine oil. Provides excellent flange sealing and durability. For original equipment replacement, high performance street, drag race and oval track use.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE VALVE COVER GASKET SET, 1607 (Part No.1607)

FEL-PRO Performance PERFORMANCE VALVE COVER GASKET SET, 1607

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$18.99
Fel-Pro® Performance Gaskets deliver reliable sealing under grueling racing conditions.
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(2 reviews)
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Mr. Gasket – Mr. Gasket Intake Manifold Bolt Set – Hex Head, 955G (Part No.955G)

Mr. Gasket Intake Manifold Bolt Set - Hex Head, 955G

from

$18.79
These grade 5 socket head bolts are zinc plated for protection and appearance. Hardened flat washers provide uniform torque & prevent galling on aluminum manifolds. Includes twelve (12) 3/8-16 x 1 inch bolts & washers.
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(12 reviews)
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Mr. Gasket – Mr. Gasket Intake Manifold Bolt Set, 6091 (Part No.6091)

Mr. Gasket Intake Manifold Bolt Set, 6091

from

$39.29
These special Grade 8 intake manifold bolts feature a 12-point smaller-than-standard head and flange, and include special extra thick flat washers for optimum clamping pressures. They’re ideal for use where space is minimal, typical on larger runner race manifolds. These bolts and washers are bright zinc plated for protection and good looks.
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(5 reviews)
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Mr. Gasket – Mr. Gasket High Performance Thermostat, 4366 (Part No.4366)

Mr. Gasket High Performance Thermostat, 4366

from

$33.09
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1213 (Part No.1213)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1213

from

$36.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1216 (Part No.1216)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1216

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$29.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1243 (Part No.1243)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1243

from

$43.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Competition Cams – Competition Cams Big Mutha’ Thumpr 243/257 Hydraulic Flat Cam, 20-602-4 (Part No.20-602-4)

Competition Cams Big Mutha' Thumpr 243/257 Hydraulic Flat Cam, 20-602-4

from

$309.99
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.
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Competition Cams – Competition Cams Xtreme Energy 230/236 Hydraulic Flat Cam, 21-224-4 (Part No.21-224-4)

Competition Cams Xtreme Energy 230/236 Hydraulic Flat Cam, 21-224-4

from

$309.99
HYDRAULIC – Xtreme Energy: High performance street. Very strong mid-range, headers, 2200+ stall.
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Competition Cams – Competition Cams Xtreme Energy 218/224 Hydraulic Flat Cam, 20-222-3 (Part No.20-222-3)

Competition Cams Xtreme Energy 218/224 Hydraulic Flat Cam, 20-222-3

from

$297.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts,
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Competition Cams – Competition Cams Xtreme Energy 206/212 Hydraulic Flat Cam, 20-220-3 (Part No.20-220-3)

Competition Cams Xtreme Energy 206/212 Hydraulic Flat Cam, 20-220-3

from

$297.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts,
See More
View Product

FEL-PRO Performance – FEL-PRO Performance Performance Oil Pan Gasket Set, 1807 (Part No.1807)

FEL-PRO Performance Performance Oil Pan Gasket Set, 1807

from

$31.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE OIL PAN GASKET SET, 1806 (Part No.1806)

FEL-PRO Performance PERFORMANCE OIL PAN GASKET SET, 1806

from

$21.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE OIL PAN GASKET SET, 1808 (Part No.1808)

FEL-PRO Performance PERFORMANCE OIL PAN GASKET SET, 1808

from

$18.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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(3 reviews)
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Competition Cams – Competition Cams Big Mutha’ Thumpr 243/257 Hydraulic Flat Cam and Lifter Kit, CL21-602-5 (Part No.CL21-602-5)

Competition Cams Big Mutha' Thumpr 243/257 Hydraulic Flat Cam and Lifter Kit, CL21-602-5

from

$465.99
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.
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Competition Cams – Competition Cams Nostalgia Plus 247/254 Hydraulic Flat Cam for Chrysler 383-440, 21-672-4 (Part No.21-672-4)

Competition Cams Nostalgia Plus 247/254 Hydraulic Flat Cam for Chrysler 383-440, 21-672-4

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$385.99
Competition Cams Nostalgia Plus 247/254 Hydraulic Flat Cam for Chrysler 383-440, 21-672-4.
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Competition Cams – Competition Cams Nostalgia Plus 233/240 Hydraulic Flat Cam for Chrysler 273-360, 20-670-4 (Part No.20-670-4)

Competition Cams Nostalgia Plus 233/240 Hydraulic Flat Cam for Chrysler 273-360, 20-670-4

from

$426.99
Competition Cams Nostalgia Plus 233/240 Hydraulic Flat Cam for Chrysler 273-360, 20-670-4.
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Competition Cams – Competition Cams Thumpr 227/241 Hydraulic Flat Cam K-Kit for Chrysler 383-440, K21-600-5 (Part No.K21-600-5)

Competition Cams Thumpr 227/241 Hydraulic Flat Cam K-Kit for Chrysler 383-440, K21-600-5

from

$781.99
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.
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Edelbrock – Edelbrock Engine Gasket Set, 7370 (Part No.7370)

Edelbrock Engine Gasket Set, 7370

from

$134.99
The Edelbrock No: 7370 head gaskets provide the best sealing solution and are matched to Edelbrock cylinder heads for optimal performance. Edelbrock relies on industry leading head gasket manufactures to ensure our head gasket sets will provide the best fit and sealing properties when used with Edelbrock aluminum cylinder heads. Edelbrock head gaskets are manufactured from high-density materials and feature a superior design that performs under pressure and provides a long-lasting seal, without re-torqueing.
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Mr. Gasket – Mr. Gasket Head Gasket, 1121G (Part No.1121G)

Mr. Gasket Head Gasket, 1121G

from

$46.99
Graphite & steel construction, proprietary polymer coated. 4.140 inch Gasket Bore, .028 inch Compressed Thickness.
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FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1008 (Part No.1008)

FEL-PRO Performance Performance Cylinder Head Gasket, 1008

from

$44.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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Most Popular Performance Engine Valve Cover Gasket Set for 1968 Dodge M300s

Enhance your 1968 Dodge M300 with this popular Performance Engine Valve Cover Gasket Set we have in stock, for $18.99.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE VALVE COVER GASKET SET, 1607 (Part No.1607)

FEL-PRO Performance PERFORMANCE VALVE COVER GASKET SET, 1607

from

$18.99
Fel-Pro® Performance Gaskets deliver reliable sealing under grueling racing conditions.
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(2 reviews)
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Best-Selling 1968 Dodge M300 Performance Engine Coolant Thermostat

Upgrade your M300 with our best-selling Performance Engine Coolant Thermostat.
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Mr. Gasket – Mr. Gasket High Performance Thermostat, 4366 (Part No.4366)

Mr. Gasket High Performance Thermostat, 4366

from

$33.09
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.
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Top-Quality Performance Intake Manifolds for 1968 Dodge M300s

Choose a high-quality OEM or aftermarket Performance Intake Manifold for Dodge M300s and enjoy top-notch performance from $18.79.
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Mr. Gasket – Mr. Gasket Intake Manifold Bolt Set, 6091 (Part No.6091)

Mr. Gasket Intake Manifold Bolt Set, 6091

from

$39.29
These special Grade 8 intake manifold bolts feature a 12-point smaller-than-standard head and flange, and include special extra thick flat washers for optimum clamping pressures. They’re ideal for use where space is minimal, typical on larger runner race manifolds. These bolts and washers are bright zinc plated for protection and good looks.
See More

(5 reviews)
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Mr. Gasket – Mr. Gasket Intake Manifold Bolt Set – Hex Head, 955G (Part No.955G)

Mr. Gasket Intake Manifold Bolt Set - Hex Head, 955G

from

$18.79
These grade 5 socket head bolts are zinc plated for protection and appearance. Hardened flat washers provide uniform torque & prevent galling on aluminum manifolds. Includes twelve (12) 3/8-16 x 1 inch bolts & washers.
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(12 reviews)
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Our Top Pick for a 1968 Dodge M300 Performance Engine Cylinder Head Gasket

Invest in a durable Performance Engine Cylinder Head Gasket for your 1968 Dodge, knowing you’re getting trusted brands and expert craftsmanship.
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FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1008 (Part No.1008)

FEL-PRO Performance Performance Cylinder Head Gasket, 1008

from

$44.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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Performance Engine Intake Manifold Gaskets for 1968 Dodge M300s

Make a smart move for your 1968 Dodge M300 with products all priced from $36.99 to $43.99.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1213 (Part No.1213)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1213

from

$36.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1243 (Part No.1243)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1243

from

$43.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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FAQs for 1968 Dodge M300 Performance Engines

What are the best-selling Performance Engines for 1968 Dodge M300s?

Out of 27 Performance Engines that fit 1968 Dodge M300s, the following parts are the top sellers:

What’s the price range for 1968 Dodge M300 Performance Engines?

The prices of Performance Engines for the 1968 Dodge M300 range from $18.79 up to $593.99 for the most premium parts.

What is the average price of a Performance Engine for a 1968 Dodge M300?

The average price for Performance Engines for the 1968 Dodge M300 is $261.29. Keep in mind the variety of part types within our Performance Engine category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Performance Engines for other Dodge M300 model years?

Yes, we carry Performance Engines for 5 model years of Dodge M300s between 1969 and 1974. The following model years are the most popular for Performance Engine purchases: 1974, 1973, 1972, 1971, 1970, and 1969.

What are the cheapest Performance Engines for my 1968 Dodge M300?

Does Advance Auto Parts sell Performance Engines for any other 1968 Dodge models?

Yes. We stock Performance Engines for 13 other popular 1968 Dodge models. Some of the most popular are 1968 Charger Performance Engines, 1968 Dart Performance Engines, 1968 Monaco Performance Engines, 1968 Coronet Performance Engines, and 1968 Polara Performance Engines.

What types of Performance Engines do you sell for my 1968 Dodge M300?

As of 8/2/26, these are some of the most in-demand types of Performance Engines for a 1968 Dodge M300:

Can I get help with 1968 Dodge M300 Performance Engine orders?

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

What is your return policy for Dodge M300 Performance Engines?

Advance Auto Parts keeps returns simple. For new Dodge M300 Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

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