BMW Internal Engine Parts for BMW F82 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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Supertech Single Groove Exhaust Valve - Priced Each
Supertech Single Groove Exhaust Valve - Priced Each
Supertech - Corporate Logo
T#:21472889
Part#: BMEVI-1055S-HS
Ships in 5 Business Days
$ 55.99 USD
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$ 55.99 USD
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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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5mm Single Groove Valve Keeper - Set Of 24
5mm Single Groove Valve Keeper - Set Of 24
Supertech - Corporate Logo
T#:21604314
Part#: KPR-5.0-7S-24
In Stock
$ 72.99 USD
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$ 72.99 USD
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Two required per valve, for use with certain supertech valves 5.0mm single groove
Ferrea High Performance Valve Spring Kit for BMW N55/S55
Ferrea High Performance Valve Spring Kit for BMW N55/S55
5150 Autosport - Corporate Logo
T#:23416526
Part#: FER-HPVSK-N55
Ships in 3 Business Days
$ 1,049.99 USD
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$ 1,049.99 USD
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Maximize your N55 or S55 engine's performance with Ferrea Valve Springs and Retainers, precision components crafted from chromoly alloy. These springs undergo special thermal treatment, ensuring exceptional durability even in extreme racing conditions. Addressing issues like valve binding, breakage, and float, Ferrea valve springs are meticulously heat-treated and stress-relieved, providing stability for high-lift and high-RPM racing engines while minimizing load loss. Precision CNC machined titanium retainers offer superior strength and stability. Ferrea's Spring Seat Locators, made from 4140 chromoly alloy, guarantee precise tolerances and a flat, parallel spring pad with a hard Nitride surface treatment for exceptional toughness and anti-wear characteristics. Please note that installation requires the expertise of an engine builder.
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Supertech Forged Pistons - Set Of 6
Supertech Forged Pistons - Set Of 6
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
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$ 984.99

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

$ 904.99 USD
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​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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BMW N55 S55 Ferrea High Performance Valve Kit
BMW N55 S55 Ferrea High Performance Valve Kit
5150 Autosport - Corporate Logo
T#:23416508
Part#: FER-HPVK-S55-T-3
Ships in 3 Business Days
$ 929.99 USD
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$ 929.99 USD
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Increase the power output of your N55/S55 engine with the high-performance Ferrea valve kit. Renowned as the industry's most reliable extreme-duty valves, they're meticulously crafted from aerospace-grade alloys, employing an exclusive two-step slow forging process for optimal grain flow and material structure integrity. A 48-hour heat treatment and stress-relieving process enhance molecular integrity. The valves feature avionics-quality hard chrome and a specially applied hard tip. Standard size: 32mm intake / 28mm exhaust, with a triple groove valve design. Compatible with factory valve locks ("Valve Keepers"), the kit includes 12x Intake Valves and 12x Exhaust Valves for a comprehensive engine upgrade!
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5150 AutoSport High Performance Main Bearing Set, BMW S55
5150 AutoSport High Performance Main Bearing Set, BMW S55
5150 Autosport - Corporate Logo
T#:23416567
Part#: 5150-HPMBS-S55
Ships in 3 Business Days
$ 549.99 USD
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$ 549.99 USD
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Supertech Single Groove Intake Valve - Set Of 12
Supertech Single Groove Intake Valve - Set Of 12
Supertech - Corporate Logo
T#:14783498
Part#: BMIVN-1055S-12
Ships in 5 Business Days
$ 310.99 USD
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$ 310.99 USD
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Head Diam: 32mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 104.9mm Stem Diam: 4.97mm
Supertech Titanium Valve Retainers - Intake - Set Of 12
Supertech Titanium Valve Retainers - Intake - Set Of 12
Supertech - Corporate Logo
T#:21604322
Part#: RET-BMN54-TI-12
Ships in 6 Business Days
$ 197.99 USD
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$ 197.99 USD
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7 Degree - 5mm valve stem - Single or Tripe Groove Valves
Supertech Titanium Valve Retainers - Exhaust - Set Of 12
Supertech Titanium Valve Retainers - Exhaust - Set Of 12
Supertech - Corporate Logo
T#:21604321
Part#: RET-BMN54-TE-12
Ships in 6 Business Days
$ 197.99 USD
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$ 197.99 USD
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7 Degree - 6mm valve stem - Single or Tripe Groove Valves
Supertech Single Groove Exhaust Valve - Set Of 12
Supertech Single Groove Exhaust Valve - Set Of 12
Supertech - Corporate Logo
T#:14816646
Part#: BMEVI-1055S-HS-1
Ships in 4 Business Days
$ 660.99 USD
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$ 660.99 USD
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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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Conical Spring Kit - Set Of 24
Conical Spring Kit - Set Of 24
Supertech - Corporate Logo
T#:21604309
Part#: SPRKFE20N54BE2
Ships on Aug 12, 2026
$ 965.99 USD
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$ 965.99 USD
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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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Performance Conical Valve Spring - Sold Each
Performance Conical Valve Spring - Sold Each
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
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$ 19.99

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

$ 18.99 USD
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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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Forged Connecting Rods - Sold Each
Forged Connecting Rods - Sold Each
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
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$ 198.99

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

$ 184.99 USD
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​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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BMW N55/S55 Valves By Super Tech
BMW N55/S55 Valves By Super Tech
5150 Autosport - Corporate Logo
T#:39329323
Part#: SUP-HPVK-S55-32/
Ships in 3 Business Days
$ 1,143.99 USD
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$ 1,143.99 USD
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Performance Conical Valve Spring - Set Of 24
Performance Conical Valve Spring - Set Of 24
Supertech - Corporate Logo
T#:21604325
Part#: SPR-FE20BE-2-24
Ships in 8 Business Days
$ 494.99 USD
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$ 494.99 USD
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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 Titanium Valve Retainers - Exhaust - Sold Each
Supertech Titanium Valve Retainers - Exhaust - Sold Each
Supertech - Corporate Logo
T#:21604320
Part#: RET-BMN54-TE
Ships in 8 Business Days
$ 16.99 USD
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$ 16.99 USD
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7 Degree - 6mm valve stem - Single or Tripe Groove Valves
Supertech Single Groove Intake Valve - Priced Each
Supertech Single Groove Intake Valve - Priced Each
Supertech - Corporate Logo
T#:14783497
Part#: BMIVN-1055S
Ships in 8 Business Days
$ 25.99 USD
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$ 25.99 USD
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Head Diam: 32mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 104.9mm Stem Diam: 4.97mm
Performance Conical Valve Spring - Set Of 24
Performance Conical Valve Spring - Set Of 24
Supertech - Corporate Logo
T#:21604324
Part#: SPR-FE20BE-24
Ships in 8 Business Days
$ 471.99 USD
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$ 471.99 USD
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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 Titanium Valve Retainers - Intake - Sold Each
Supertech Titanium Valve Retainers - Intake - Sold Each
Supertech - Corporate Logo
T#:21604319
Part#: RET-BMN54-TI
Ships in 8 Business Days
$ 16.99 USD
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$ 16.99 USD
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7 Degree - 5mm valve stem - Single or Tripe Groove Valves
Performance Conical Valve Spring - Sold Each
Performance Conical Valve Spring - Sold Each
Supertech - Corporate Logo
T#:21604306
Part#: SPR-FE20BE-2
Ships in 8 Business Days
$ 20.99 USD
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$ 20.99 USD
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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 High Performance Valve Spring Kit - 88lbs - BMW N55 S55
SuperTech High Performance Valve Spring Kit - 88lbs - BMW N55 S55 ...
Supertech - Corporate Logo
T#:14783500
Part#: SUP-HPVSK-S55-88
Ships on Aug 7, 2026
$ 1,099.99 USD
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$ 1,099.99 USD
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5mm Single Groove Valve Keeper - Priced Each
5mm Single Groove Valve Keeper - Priced Each
Supertech - Corporate Logo
T#:21604312
Part#: KPR-5.0-7S
Back Ordered
$ 3.99 USD
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$ 3.99 USD
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Two required per valve, necessary use with certain supertech valves 5.0mm single groove
ARP Head Stud Kit BMW S55 Custom Age 625+
ARP Head Stud Kit BMW S55 Custom Age 625+
N55 Engines it is a MUST to drill and tap!
5150 Autosport - Corporate Logo
T#:41458801
Part#: ARP-HSK-S55-CA
Back Ordered
$ 899.99 USD
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$ 899.99 USD
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Upgrade your S55 with the ARP Head Stud Kit BMW S55 Custom Age 625+ and drive with confidence under pressure.

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