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All Engine Internals

Built for your Chrysler, Dodge, Ram, and Jeep Hemi platforms, our Engine Internals collection offers premium components designed to handle increased power and boost. Whether you’re building a reliable daily driver or a high-performance race engine, these parts deliver the strength and precision needed for long-lasting performance.

Find camshafts, pistons, rods, bearings, cylinder heads, crankshafts, and gasket kits engineered to improve valvetrain control and durability under demanding conditions. Each component supports your build goals, from enhanced power delivery to improved engine response and reliability.

  • High-strength pistons and rods
  • Precision camshafts for optimized timing
  • Durable bearings and gasket kits
  • Performance cylinder heads and crankshafts

Shop engine internals for your Hemi platform at FastHemis.

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1483 Results

DiabloSport Modified PCM + i3 Programmer Combo: Ram 2022 (5.7L Hemi 1500 8-Speed, NON eTorque)
DiabloSport Modified PCM + i3 Programmer Combo: Ram 2022 (5.7L Hemi 1500 8-Speed, NON eTorque)

DiabloSport Modified PCM + i3 Programmer Combo: Dodge Ram 2022 (5.7L Hemi 1500 8-Speed, NON eTorque)

Diablo Sport

Regular price $1,631.95 $1,449.95 11% off

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DiabloSport Trinity 2 (T2 EX) Platinum Programmer / Monitor: Jeep Vehicles 2005 - 2014
DiabloSport Trinity 2 (T2 EX) Platinum Programmer / Monitor: Jeep Vehicles 2005 - 2014
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DiabloSport Trinity 2 (T2 EX) Platinum Programmer / Monitor: Jeep Vehicles 2005 - 2014

Diablo Sport
4.0 (1)

Regular price $806.95 $716.95 11% off

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DiabloSport Modified PCM + Trinity 2 Programmer Combo: Chrysler 300 2021 (5.7L Hemi / 6.4L SRT)
DiabloSport Modified PCM + Trinity 2 Programmer Combo: Chrysler 300 2021 (5.7L Hemi / 6.4L SRT)

DiabloSport Modified PCM + Trinity 2 Programmer Combo: Chrysler 300 2021 (5.7L Hemi / 6.4L SRT)

Diablo Sport

Regular price $1,912.95 $1,699.95 11% off

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Fuel Injector Clinic 445cc Fuel Injectors: Chrysler / Dodge / Ram / Jeep Hemi & SRT 2003 - 2025
usa

Fuel Injector Clinic 445cc Fuel Injectors: Chrysler / Dodge / Jeep Hemi & SRT 2003 - 2023

Fuel Injector Clinic

Regular price $750.00 $625.00 17% off

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DiabloSport Modified PCM + Trinity 2 Programmer Combo: Jeep Grand Cherokee 2015 - 2016 (5.7L Hemi & 6.4L SRT)
DiabloSport Modified PCM + Trinity 2 Programmer Combo: Jeep Grand Cherokee 2015 - 2016 (5.7L Hemi & 6.4L SRT)
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DiabloSport Modified PCM + Trinity 2 Programmer Combo: Jeep Grand Cherokee 2015 (5.7L Hemi & 6.4L SRT)

Diablo Sport
5.0 (1)

Regular price $2,306.95 $2,049.95 11% off

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Cometic MLS Head Gaskets (4.100" Bore): Chrysler / Dodge / Ram / Jeep 5.7L Hemi 2003 - 2025
Cometic MLS Head Gaskets (4.100" Bore): Chrysler / Dodge / Ram / Jeep 5.7L Hemi 2003 - 2025
usa

Cometic MLS Head Gaskets (4.100" Bore): Chrysler / Dodge / Ram / Jeep 5.7L Hemi 2003 - 2025

Cometic Gasket

Regular price from $96.54 53% off

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Kooks Dodge Hemi 09 5.7/6.1L/6.2L Stg 8 Header Bolt Kit -M8-1.25 x 25mm Bolts and Locking Hardware
Kooks Dodge Hemi 09 5.7/6.1L/6.2L Stg 8 Header Bolt Kit -M8-1.25 x 25mm Bolts and Locking Hardware
usa

Kooks Headers Stage 8 Bolt Kit: Fits Chrysler / Dodge / Jeep / Ram (05-26) w/ HEMI Engines

Kooks Headers

Regular price $75.80 $68.22 10% off

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Cometic Chrysler 6.4L Hemi 4.150in Bore .054in Thick MLX Head Gasket - Right
Cometic Chrysler 6.4L Hemi 4.150in Bore .054in Thick MLX Head Gasket - Right
usa

Cometic MLX RHS Head Gasket (4.150" Bore, .054" Thick): Fits Chrysler / Dodge / Jeep / Ram (11-26)

Cometic Gasket
5.0 (1)

Regular price $137.84 $124.07 10% off

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Cometic Chrysler 6.4L HEMI 4.150in Bore .054in Thick MLX Head Gasket - Left
Cometic Chrysler 6.4L HEMI 4.150in Bore .054in Thick MLX Head Gasket - Left
usa

Cometic MLX LHS Head Gasket (4.150" Bore, .054" Thick): Fits Chrysler / Dodge / Jeep / Ram (11-26)

Cometic Gasket
5.0 (1)

Regular price $137.84 $124.07 10% off

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AirAid Throttle Body Spacer: Dodge Durango / Ram 5.7L Hemi 2003 - 2008
Volant Throttle Body Spacer: Dodge Durango (09-25) / Ram 1500 (09-12) / Ram 2500 (09-25) / Ram 3500 (09-25)
Volant Throttle Body Spacer: Dodge Durango (09-25) / Ram 1500 (09-12) / Ram 2500 (09-25) / Ram 3500 (09-25)
usa

Volant Throttle Body Spacer: Fits Dodge / Ram (02-26)

Volant

Regular price $78.38 $71.90 8% off

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Essential Engine Internals for Chrysler, Dodge, Ram & Jeep Hemi Builds

Upgrading your engine internals is key to building a durable, high-performance Hemi platform. Whether you’re aiming for a dependable daily driver or a boosted race engine, the right components ensure your build can handle increased power and demanding conditions with confidence.

Why upgrade your engine internals on a Hemi?

Stock engine internals are designed for factory power levels and daily reliability, but pushing your Hemi beyond those limits requires stronger, more precise components. Upgraded pistons, rods, and camshafts improve strength and valvetrain control, reducing the risk of failure under boost or high RPM. This helps maintain engine integrity and extends the life of your build.

  • Improved durability under increased power and boost
  • Better valvetrain timing and control for performance gains
  • Enhanced reliability for street or track use

What should I look for in performance engine internals?

Choosing the right internals depends on your build goals and engine platform. High-strength forged pistons and rods are essential for boosted or high-horsepower applications. Precision-ground camshafts optimize valve timing for improved power delivery. Durable bearings and gasket kits ensure proper sealing and reduce wear. Matching these components to your specific Hemi engine and intended use is critical for a balanced, reliable build.

Building a reliable Hemi engine for boost – key considerations

When building a boosted Hemi, focus on components that handle increased cylinder pressures and heat. Upgrading your internals is just one part of the equation—proper assembly, break-in procedures, and tuning are equally important. Shop FastHemis for quality engine internals designed specifically for Chrysler, Dodge, Ram, and Jeep Hemi platforms to support your performance goals with confidence.

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