K20A K20Z Parts | Honda K-Series Engine Components

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Optimize your Honda K20A (JDM Type R, RSX Type S) or K20Z (Civic Si) engine for ultimate performance with our wide selection of aftermarket parts. From aggressive camshafts and high-strength valvetrain components to stroker kits, forged pistons, and robust connecting rods, build the ultimate K-series powerhouse for street or race.

AR8605 - Honda K20A2/Z3 Head ARP Head Studs

K20A / K20Z

AR8605 – Honda K20A2/Z3 Head ARP Head Studs

$225.23

AR8606 - Honda K24 Block w/K20A Head ARP Head Studs

K20A / K20Z

AR8606 – Honda K24 Block w/K20A Head ARP Head Studs

$225.20

AR8900 - Connecting Rod Fastener/Rod Bolt - ARP2000 (3/8" x 1.600") - 1 only bolt

1FZFE

AR8900 – Connecting Rod Fastener/Rod Bolt – ARP2000 (3/8″ x 1.600″) – 1 only bolt

$11.50

AR8910 - Connecting Rod Fastener/Rod Bolt - ARP Custom Age 625+ (3/8" x 1.600") - 1 only bolt

1FZFE

AR8910 – Connecting Rod Fastener/Rod Bolt – ARP Custom Age 625+ (3/8″ x 1.600″) – 1 only bolt

$51.75

BC0040 - Honda K20A/K20Z/F20C/F22C Spring/Titanium Retainer/Seat Kit

F20C / F22C - Valvetrain

BC0040 – Honda K20A/K20Z/F20C/F22C Spring/Titanium Retainer/Seat Kit

$560.21

BC0040S - Honda K20A/K20Z/F20C/F22C Spring/Steel Retainer/Seat Kit

F20C / F22C - Valvetrain

BC0040S – Honda K20A/K20Z/F20C/F22C Spring/Steel Retainer/Seat Kit

$461.31

BC0040SX - Honda K20A/K20Z/F20C/F22C Spring/Steel Retainer Kit

F20C / F22C - Valvetrain

BC0040SX – Honda K20A/K20Z/F20C/F22C Spring/Steel Retainer Kit

$388.87

BC0040T - Honda K20A/K20Z Spring/Titanium Retainer/Seat Kit (High Lift)

F20C / F22C - Valvetrain

BC0040T – Honda K20A/K20Z Spring/Titanium Retainer/Seat Kit (High Lift)

$560.21

BC0040TS - Honda K20A/K20Z Spring/Steel Retainer/Seat Kit (High Lift)

F20C / F22C - Valvetrain

BC0040TS – Honda K20A/K20Z Spring/Steel Retainer/Seat Kit (High Lift)

$461.31

BC0040X - Honda K20A/K20Z/F20C/F22C Spring/Titanium Retainer Kit

F20C / F22C - Valvetrain

BC0040X – Honda K20A/K20Z/F20C/F22C Spring/Titanium Retainer Kit

$494.30

BC0041-2 - Honda K20A/K20Z Stage 2 Camshafts - Forced Induction Spec

CAMSHAFTS

BC0041-2 – Honda K20A/K20Z Stage 2 Camshafts – Forced Induction Spec

$1,093.93

BC0042-2 - Honda K20A/K20Z Stage 2 Camshafts - Normally Aspirated/High Boost

CAMSHAFTS

BC0042-2 – Honda K20A/K20Z Stage 2 Camshafts – Normally Aspirated/High Boost

$1,093.93

BC0043-2 - Honda K20A/K20Z Stage 3 Camshafts - Normally Aspirated Spec

CAMSHAFTS

BC0043-2 – Honda K20A/K20Z Stage 3 Camshafts – Normally Aspirated Spec

$1,093.93

BC0044 - Honda K20A Stroker Kit - 92mm Stroke/LightWeight Rods (B18A Journal)

K20A / K20Z

BC0044 – Honda K20A Stroker Kit – 92mm Stroke/LightWeight Rods (B18A Journal)

$4,248.23

BC0044LW - Honda K20A Stroker Kit - LW 92mm Stroke/LightWeight Rods (B18A journal)

K20A / K20Z

BC0044LW – Honda K20A Stroker Kit – LW 92mm Stroke/LightWeight Rods (B18A journal)

$4,694.84

BC0045 - Honda K20A Stroker Kit - 92mm Stroke/ProH2K Long Rods (5.512"/B18A Journal)

K20A / K20Z

BC0045 – Honda K20A Stroker Kit – 92mm Stroke/ProH2K Long Rods (5.512″/B18A Journal)

$4,248.23

BC0048 - Honda K24 Stroker Kit - 102mm Stroke/LightWeight Rods (5.985"/B18A Journal)

K20A / K20Z

BC0048 – Honda K24 Stroker Kit – 102mm Stroke/LightWeight Rods (5.985″/B18A Journal)

$4,248.23

BC0049 - Honda K24 Stroker Kit - 102mm Stroke/ProH2k Rods (5.985"/B18A Journal)

K20A / K20Z

BC0049 – Honda K24 Stroker Kit – 102mm Stroke/ProH2k Rods (5.985″/B18A Journal)

$4,248.23

BC0209-CLR - Nissan SR20DE(T) Stroker Kit - 91mm Stroke/ProH2K Rods w/JE Pistons 89mm x 8.5:1

Automotive Parts

BC0209-CLR – Nissan SR20DE(T) Stroker Kit – 91mm Stroke/ProH2K Rods w/JE Pistons 89mm x 8.5:1

$1,022.79

BC0912 - Polaris XP Turbo (16-up) Stage 3 Wild Duner Camshafts

Automotive Parts

BC0912 – Polaris XP Turbo (16-up) Stage 3 Wild Duner Camshafts

$3,138.93

BC0981T - Polaris Pro R (21-up) Stage 2+ Forced Induction Camshafts (pair)

Automotive Parts

BC0981T – Polaris Pro R (21-up) Stage 2+ Forced Induction Camshafts (pair)

$881.48

BC2940 - Honda/Acura 5.5mm Billet Keepers/Locks (fits BC2010 and BC2011)

B16A B18C Parts

BC2940 – Honda/Acura 5.5mm Billet Keepers/Locks (fits BC2010 and BC2011)

$124.52

BC3040 - Honda/Acura K20A2/K20A/K20Z3 Intake Valves (35mm / STD) - set/8

K20A / K20Z

BC3040 – Honda/Acura K20A2/K20A/K20Z3 Intake Valves (35mm / STD) – set/8

$219.10

BC3040-1 - Individual Honda/Acura K20A2/K20A/K20Z3 Intake Valves (35mm / STD) - 1 only valve

K20A / K20Z

BC3040-1 – Individual Honda/Acura K20A2/K20A/K20Z3 Intake Valves (35mm / STD) – 1 only valve

$27.38

BC3040B - Honda/Acura K20A2/K20A/K20Z3 Black Nitride Intake Valves (35mm / STD) - set/8

Automotive Parts

BC3040B – Honda/Acura K20A2/K20A/K20Z3 Black Nitride Intake Valves (35mm / STD) – set/8

$219.10

BC3041 - Honda/Acura K20A2/K20A/K20Z3 Exhaust Valves (30mm / STD) - set/8

K20A / K20Z

BC3041 – Honda/Acura K20A2/K20A/K20Z3 Exhaust Valves (30mm / STD) – set/8

$219.10

BC3041-1 - Individual Honda/Acura K20A2/K20A/K20Z3 Exhaust Valves (30mm / STD) - 1 only valve

K20A / K20Z

BC3041-1 – Individual Honda/Acura K20A2/K20A/K20Z3 Exhaust Valves (30mm / STD) – 1 only valve

$27.38

BC3044 - Honda/Acura K20A2/K20A/K20Z3 Intake Valves (36mm / +1mm) - set/8

K20A / K20Z

BC3044 – Honda/Acura K20A2/K20A/K20Z3 Intake Valves (36mm / +1mm) – set/8

$219.10

BC3045 - Honda/Acura K20A2/K20A/K20Z3 Exhaust Valves (31mm / +1mm) - set/8

K20A / K20Z

BC3045 – Honda/Acura K20A2/K20A/K20Z3 Exhaust Valves (31mm / +1mm) – set/8

$219.10

BC3904 - Honda K Series VTEC (K20A/Z, K24A) Intake Valve Guides

K20A / K20Z

BC3904 – Honda K Series VTEC (K20A/Z, K24A) Intake Valve Guides

$92.93

BC3905 - Honda K Series VTEC (K20A/Z, K24A) Exhuast Valve Guides

K20A / K20Z

BC3905 – Honda K Series VTEC (K20A/Z, K24A) Exhuast Valve Guides

$92.93

BC3971 - Honda B18C 5.5mm Valve Stem Seals for Stock or Aftermarket Valve Guides

1FZFE

BC3971 – Honda B18C 5.5mm Valve Stem Seals for Stock or Aftermarket Valve Guides

$63.25

BC4020 - ACL Honda B18A/B Bearing Set - OEM Sizing / BC K-Series Stroker

B16A / B18C - Misc.

BC4020 – ACL Honda B18A/B Bearing Set – OEM Sizing / BC K-Series Stroker

$272.60

BC4025 - ACL Honda K20A2/Z3 Bearing Set - OEM Sizing

K20A / K20Z

BC4025 – ACL Honda K20A2/Z3 Bearing Set – OEM Sizing

$272.60

BC5047 - Honda/Acura K20 Crankshaft - 4340 Billet - 92mm Stroke w/OEM Rod Journal

CRANKSHAFTS

BC5047 – Honda/Acura K20 Crankshaft – 4340 Billet – 92mm Stroke w/OEM Rod Journal

$2,779.72

BC5048 - Honda/Acura K20 Crankshaft - 4340 Billet - 92mm Stroke w/B18A Rod Journal

CRANKSHAFTS

BC5048 – Honda/Acura K20 Crankshaft – 4340 Billet – 92mm Stroke w/B18A Rod Journal

$2,779.72

BC5048LW - Honda K Series LightWeight Crankshaft - 4340 Billet - 92mm Stroke w/LS Journals (-5 lbs lighter)

CRANKSHAFTS

BC5048LW – Honda K Series LightWeight Crankshaft – 4340 Billet – 92mm Stroke w/LS Journals (-5 lbs lighter)

$3,252.34

BC5049 - Honda/Acura K24 Crankshaft - 4340 Billet - 102mm Stroke w/B18A Rod Journal

CRANKSHAFTS

BC5049 – Honda/Acura K24 Crankshaft – 4340 Billet – 102mm Stroke w/B18A Rod Journal

$2,779.72

BC5049-103 - Honda/Acura K24 Crankshaft - 4340 Billet - 103mm Stroke w/B18A Rod Journal

CRANKSHAFTS

BC5049-103 – Honda/Acura K24 Crankshaft – 4340 Billet – 103mm Stroke w/B18A Rod Journal

$2,779.72

BC5049-105 - Honda/Acura K24 Crankshaft - 4340 Billet - 105mm Stroke w/B18A Rod Journal

CRANKSHAFTS

BC5049-105 – Honda/Acura K24 Crankshaft – 4340 Billet – 105mm Stroke w/B18A Rod Journal

$2,779.72