BMW Internal Engine Parts for BMW F83 M4 S55 3.0L

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Rebuilding your engine or giving your cylinder head an overhaul? Internal engine components covers parts that are located within the engine block and cylinder head. Examples include: timing chains and tensioners, rocker arms, rod bolts and studs, head bolts, valve springs, connecting rods, and more. These are Genuine BMW engine parts, performance upgrades, or approved aftermarket brands that have a long track record of reliability and quality.

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Turner Motorsport - Corporate Logo
T#:34147756
Part#: N5X-WPC-RB
In Stock
Sale - Save 20% $ 519.99

This product was last offered at the strikethrough price on
06-14-2026

$ 415.99 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 519.99

This product was last offered at the strikethrough price on
06-14-2026

$ 415.99 USD
Free Shipping on orders $49 and up

Upgrade your engine build with Turner's WPC-treated Race Series Bearings, engineered for serious performance enthusiasts. Starting with ACL’s high-performance bearing shells, these Race Series bearings are built to withstand extreme RPMs and stress. Utilizing a "Duraglide" tri-metal construction and a high-strength overlay plate, these bearings offer superior oiling and heat resistance for high-RPM operation.

Our WPC-treated bearings take ACL’s already impressive design and enhance it even further. The WPC treatment process strengthens and smooths the bearing surface by firing high-speed, ultra-fine particles at the bearing shells, reducing friction and improving durability. This advanced surface treatment ensures smoother operation and improved heat dissipation, which are critical for any high-performance engine.

Key Features:

Duraglide Tri-Metal Construction: ACL's Race Series bearings feature a high-strength overlay for enhanced performance. Optimized Oiling: Designed to promote better oil flow during high-RPM conditions. Precise Fitment: Manufactured with OEM-level precision using micron tolerance machining. WPC-Treated for Strength: Surface treatment adds strength and reduces friction for improved engine performance. No Flash Plating: Allows for better heat transfer and bearing retention. Thermal Discharge Process: Smoother, stronger components through WPC’s unique thermal discharge technology. Enhanced Heat and Friction Resistance: Built to combat the biggest enemies of high-performance engines. Don’t settle for standard bearings—choose Turner Motorsport WPC-treated Race Series Bearings for the ultimate engine performance upgrade. Perfect for your next engine rebuild or rod bearing service!

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Turner Motorsport - Corporate Logo
T#:34147790
Part#: N5X-WPC-MB
In Stock
$ 607.99

This product was last offered at the strikethrough price on
05-03-2026

$ 487.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 607.99

This product was last offered at the strikethrough price on
05-03-2026

$ 487.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up

Upgrade your engine build with Turner's WPC-treated Race Series Bearings, engineered for serious performance enthusiasts. Starting with ACL’s high-performance bearing shells, these Race Series bearings are built to withstand extreme RPMs and stress. Utilizing a "Duraglide" tri-metal construction and a high-strength overlay plate, these bearings offer superior oiling and heat resistance for high-RPM operation.

Our WPC-treated bearings take ACL’s already impressive design and enhance it even further. The WPC treatment process strengthens and smooths the bearing surface by firing high-speed, ultra-fine particles at the bearing shells, reducing friction and improving durability. This advanced surface treatment ensures smoother operation and improved heat dissipation, which are critical for any high-performance engine.

Key Features:

Duraglide Tri-Metal Construction: ACL's Race Series bearings feature a high-strength overlay for enhanced performance. Optimized Oiling: Designed to promote better oil flow during high-RPM conditions. Precise Fitment: Manufactured with OEM-level precision using micron tolerance machining. WPC-Treated for Strength: Surface treatment adds strength and reduces friction for improved engine performance. No Flash Plating: Allows for better heat transfer and bearing retention. Thermal Discharge Process: Smoother, stronger components through WPC’s unique thermal discharge technology. Enhanced Heat and Friction Resistance: Built to combat the biggest enemies of high-performance engines. Don’t settle for standard bearings—choose Turner Motorsport WPC-treated Race Series Bearings for the ultimate engine performance upgrade. Perfect for your next engine rebuild or main bearing service!

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Supertech - Corporate Logo
T#:21472889
Part#: BMEVI-1055S-HS
Ships in 5 Business Days
$ 55.99 USD
Free Shipping on orders $49 and up
Single Groove sodium filled exhaust valves for high performance builds Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 112.9mm Stem Diam: 5.96mm
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Supertech - Corporate Logo
T#:21604314
Part#: KPR-5.0-7S-24
In Stock
$ 72.99 USD
Free Shipping on orders $49 and up
Two required per valve, for use with certain supertech valves 5.0mm single groove
MANLEY - Corporate Logo
T#:17073607
Part#: 647005C-6
In Stock
8% off MSRP $ 1,208.99

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

$ 1,111.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 1,208.99

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

$ 1,111.99 USD
Free Shipping on orders $49 and up

BMW N55 S55 37cc Platinum Series Dish Piston Set - 84.5mm Bore is designed for high-performance applications, providing exceptional strength and durability for BMW engines. Turner Motorsport offers this premium piston set to enhance engine reliability and efficiency.

  • High-Strength Material: Crafted from 2618 high-strength material for superior durability and performance.
  • Quiet Start-Ups: Offset wrist pin design minimizes noise during engine start-ups.
  • Premium Pins: Includes a .210” wall Premium Chrome Moly pin (Standard Series) or a .210” wall 9310 alloy pin (Extreme Duty Series) for added strength.
  • Pressure Balance Groove: Features a pressure balance groove to improve piston stability and efficiency.
  • Valve Accommodation: Designed to accommodate +1mm valve sizes for enhanced engine performance.
  • Top-Quality Rings: Comes with premium steel top rings, Napier seconds, and round wire locks for optimal sealing and reliability.
  • Recommended Clearance: Piston clearance of .0035” measured .850” from the bottom of the oil ring for precise fitment.
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MANLEY - Corporate Logo
T#:17073609
Part#: 647000C-6
In Stock at Vendor
8% off MSRP $ 1,208.99

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

$ 1,111.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 1,208.99

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

$ 1,111.99 USD
Free Shipping on orders $49 and up

Upgrade the performance of your BMW N55/S55 3.0L engine with the Turner Motorsport Manley 37cc Platinum Series Dish Piston Set. Crafted from high-strength 2618 material, these pistons offer exceptional durability and reliability. The offset wrist pin design ensures quiet start-ups, while the inclusion of both Premium Chrome Moly and 9310 alloy .210” wall pins caters to varying needs. The pressure balance groove, compatibility with +1mm valve sizes, and premium steel top rings with Napier seconds and round wire locks make these pistons a top-notch choice. With a recommended piston clearance of .0035”, measured .850” from the bottom of the oil ring, these pistons guarantee optimal performance for your BMW engine.

  • Manley 37cc Platinum Series Dish Piston Set for BMW N55/S55 3.0L engine.
  • High-strength 2618 material for exceptional durability.
  • Offset wrist pin for quiet start-ups.
  • Includes both Premium Chrome Moly and 9310 alloy .210” wall pins.
  • Pressure balance groove for enhanced performance.
  • Accommodates +1mm valve sizes for customization.
  • Premium steel top rings with Napier seconds and round wire locks included.
  • Recommended piston clearance of .0035” ensures optimal engine function.

Enhance your BMW's engine with the Turner Motorsport Manley 37cc Platinum Series Dish Piston Set, delivering reliability and performance.

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Supertech - Corporate Logo
T#:21604329
Part#: P6-BMN55-84-T-6
In Stock
$ 984.99

This product was last offered at the strikethrough price on
05-21-2026

$ 904.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 984.99

This product was last offered at the strikethrough price on
05-21-2026

$ 904.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
​Supertech forged pistons are a great choice for performance engine builds! Bore: 84.00mm Over Size: STD Comp Ratio: 10.2:1 Dome dish: -10.4 Head CCs: 37cc Comp Height: 32.40mm Stroke: 89.60mm Skirt style: Slipper Design Rod Length: 141.35mm Pin Diam: 22mm Material: 4032 Application: All Motor / Turbo Ring part number: R84-GNH8400 (MUST BE PURCHASED SEPARATELY)
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MMX Performance - Corporate Logo
T#:19891361
Part#: MMR20-1004
Special Order: No Guaranteed ETA
$ 1,064.99 USD
Free Shipping on orders $49 and up
Both the N55 and S55 engines are plagued by the same issue when chasing high horsepower numbers... the dreaded crankhub failure. Fortunately MMR Performance has released an upgraded version of their already stout single-piece crankhub, but this time offering a 4-pin dowelled location that locks onto the front of the crankshaft. This configuration eliminates the multi-piece crankhub with friction discs in favor of a more robust single piece crankhub. Recommended for high-powered cars over 700 Horsepower
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Supertech - Corporate Logo
T#:14783498
Part#: BMIVN-1055S-12
Ships in 5 Business Days
$ 310.99 USD
Free Shipping on orders $49 and up
Head Diam: 32mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 104.9mm Stem Diam: 4.97mm
Supertech - Corporate Logo
T#:21604322
Part#: RET-BMN54-TI-12
Ships in 6 Business Days
$ 197.99 USD
Free Shipping on orders $49 and up
7 Degree - 5mm valve stem - Single or Tripe Groove Valves
Supertech - Corporate Logo
T#:21604321
Part#: RET-BMN54-TE-12
Ships in 6 Business Days
$ 197.99 USD
Free Shipping on orders $49 and up
7 Degree - 6mm valve stem - Single or Tripe Groove Valves


Supertech - Corporate Logo
T#:14816646
Part#: BMEVI-1055S-HS-1
Ships in 4 Business Days
$ 660.99 USD
Free Shipping on orders $49 and up
Single Groove sodium filled exhaust valve set for high performance builds Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 112.9mm Stem Diam: 5.96mm
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Supertech - Corporate Logo
T#:21604309
Part#: SPRKFE20N54BE2
Ships on Aug 12, 2026
$ 965.99 USD
Free Shipping on orders $49 and up
Supertech has the high performance valvetrain components you need to take your build to the next level. ​​Can be used with factory valve stem seals and keepers. InnSpr.OD: 21mm InnSpr.ID: 14.2mm Seat Pressure: 88 @ 36.5 Open Pressure: 160 @ 10 Max Lift: 12mm Coil Bind: 23.2mm Rate: 7.25 Kit spring: SPR-FE20BE-2 Kit spring qty: 24 Retainer: RET-BMN54-TI (5mm) / RET-BMN54-TE (6mm) OutSpr.OD: 24.4mm OutSpr.ID: 17.6mm Retainer qty: 24
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OEM Ina Intake Hydraulic Tappet - BMW N52 N54 N55 N20 S55
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:591661
Part#: 11337548690
In Stock
$ 15.99 USD
Free Shipping on orders $49 and up
Hydraulic valve lifter

Supertech - Corporate Logo
T#:21472894
Part#: SPR-FE20BE
In Stock
$ 19.99

This product was last offered at the strikethrough price on
05-03-2026

$ 18.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 19.99

This product was last offered at the strikethrough price on
05-03-2026

$ 18.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 75 @ 37 Open Pressure: 155 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm Rate: 8 OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm
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Supertech - Corporate Logo
T#:21604327
Part#: CR-BMN55-H144.35
In Stock
$ 198.99

This product was last offered at the strikethrough price on
05-03-2026

$ 184.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 198.99

This product was last offered at the strikethrough price on
05-03-2026

$ 184.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
​Supertech forged rods are a great choice for performance engine builds! These rods come with ARP 2000 hardware and are designed for high powered N55/S55 applications. H-Beam design Forged 4340 alloy Center to center: 144.35mm Be bore: 53.6mm Be width: 20.88 Pe bore: 22mm full float Pe width: 20.88mm tapered ARP 2000 - 3/8" x 1.600" bolts
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Supertech - Corporate Logo
T#:21604325
Part#: SPR-FE20BE-2-24
Ships in 8 Business Days
$ 494.99 USD
Free Shipping on orders $49 and up
Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 84 @ 37 Open Pressure: 157 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm Rate: 7.25
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Supertech - Corporate Logo
T#:21604320
Part#: RET-BMN54-TE
Ships in 8 Business Days
$ 16.99 USD
Free Shipping on orders $49 and up
7 Degree - 6mm valve stem - Single or Tripe Groove Valves
Supertech - Corporate Logo
T#:14783497
Part#: BMIVN-1055S
Ships in 8 Business Days
$ 25.99 USD
Free Shipping on orders $49 and up
Head Diam: 32mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 104.9mm Stem Diam: 4.97mm

Supertech - Corporate Logo
T#:21604324
Part#: SPR-FE20BE-24
Ships in 8 Business Days
$ 471.99 USD
Free Shipping on orders $49 and up
$ 471.99 USD
Free Shipping on orders $49 and up
Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 75 @ 37 Open Pressure: 155 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm Rate: 8 OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm
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Supertech - Corporate Logo
T#:21604319
Part#: RET-BMN54-TI
Ships in 8 Business Days
$ 16.99 USD
Free Shipping on orders $49 and up
7 Degree - 5mm valve stem - Single or Tripe Groove Valves
Supertech - Corporate Logo
T#:21604306
Part#: SPR-FE20BE-2
Ships in 8 Business Days
$ 20.99 USD
Free Shipping on orders $49 and up
Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 84 @ 37 Open Pressure: 157 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm Rate: 7.25
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MANLEY - Corporate Logo
T#:17073608
Part#: 647000CE-6
Back Ordered
8% off MSRP $ 1,423.99

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

$ 1,309.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 1,423.99

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

$ 1,309.99 USD
Free Shipping on orders $49 and up


Supertech - Corporate Logo
T#:21604312
Part#: KPR-5.0-7S
Back Ordered
$ 3.99 USD
Free Shipping on orders $49 and up
Two required per valve, necessary use with certain supertech valves 5.0mm single groove