1973 | Summit Racing

Proform Camshaft Installation Handles 66897

Camshaft Installation, Hex Design Handle, Bolts Included, Chevy, Each

Part Number: PRO-66897

4.88 out of 5 stars ( 8 )

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Mikuni HSR-48 Carburetor Race Kits 48-2

Valve Body, MIKUNI HSR48 RACE KIT

Part Number: MKU-48-2

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Champion Industrial Spark Plugs 516

Spark Plug, D16, Industrial and Agricultural, 18mm Thread, .500 in. Reach, Non-Resistor, Each

Part Number: CPN-516

Not Yet Reviewed

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NGK Iridium IX Spark Plugs CR7HIX

Spark Plug, IX Iridium, 10mm Thread, .500 in. Reach, 5/8 in. Hex, Resistor, Each

Part Number: NGK-7544

5.0 out of 5 stars ( 1 )

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Wiseco 2-Stroke Piston Rings for 1969-1975 H1 MACH III, 1976 KH500 - 2421CD

Piston Rings, Chrome, 61.50mm, Kawasaki, Set

Part Number: WIS-2421CD

Not Yet Reviewed

Estimated Ship Date: May 20, 2026 if ordered today

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Estimated Ship Date: May 20, 2026 if ordered today

NGK Standard Series Spark Plugs D7EA

Spark Plug, Standard, 12mm Thread, .750 Reach, 18mm Hex, Gasket Seat, Non-Resistor, Each

Part Number: NGK-7912

2.67 out of 5 stars ( 3 )

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MotoRad STAT LOK Thermostat Gaskets and Seals MG40EA

Gasket, Water Neck Gasket, Paper, Chevy, Dodge, GMC, Plymouth, Each

Part Number: SNN-MG40EA

Not Yet Reviewed

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Redhorse Performance 4910 Series Thermostat Housing Assemblies 4910-460-20-1

Water Neck, Aluminum, Blue Anodized, O-Ring, 75 Degree, 1.250 in. Outlet, Ford, 426/460, Each

Part Number: HSE-4910-460-201

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

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Estimated Ship Date: May 15, 2026 if ordered today

Rick's Motorsport Lithium Ion-Compatible Rectifier-Regulators 27-014100

BATTERY, REGULATOR/RECTIFIER LITHIUM HONDA

Part Number: RSE-14-100

Not Yet Reviewed

Estimated Ship Date: May 8, 2026 if ordered today

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Estimated Ship Date: May 8, 2026 if ordered today

NGK Iridium IX Spark Plugs CR7EIX

Spark Plug, Iridium IX, Gasket Seat, 10mm Thread, .750 in. Reach, Resistor, Each

Part Number: NGK-7385

5.0 out of 5 stars ( 2 )

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ACCEL Motorcycle Chrome Starter Solenoids 40111C

Starter Solenoid, Chrome Plated, Harley-Davidson®, Each

Part Number: ALM-40111C

Not Yet Reviewed

Estimated Ship Date: May 8, 2026 if ordered today

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Estimated Ship Date: May 8, 2026 if ordered today

NGK Iridium IX Spark Plugs BR7HIX

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .500 in. Reach, Resistor, Each

Part Number: NGK-7067

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E3 Spark Plugs E3.32

Spark Plug, E3, Gasket Seat, 14mm Thread, 0.500 in. Reach, Resistor, Each

Part Number: ETP-E3-32

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E3 Spark Plugs E3.36

Spark Plug, E3, Gasket Seat, 12mm Thread, 0.750 in. Reach, Projected Tip, Resistor, Each

Part Number: ETP-E3-36

4.78 out of 5 stars ( 9 )

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Autolite Racing Spark Plugs R4132

Spark Plug, Racing, Copper Core, Gasket Seat, 12mm Thread, 0.753 in. Reach, Each

Part Number: ATL-AR4132

Not Yet Reviewed

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MotoRad Thermostats 300-195

Thermostat, 195 Degrees F, Stainless Steel, Each

Part Number: SNN-300-195

Not Yet Reviewed

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Hella High Wattage Series Halogen Light Bulbs H3 130WTB

Light Bulbs, High Wattage Series, H3 Bulb Style, Halogen, White, 3200K Color Temperature, Pair

Part Number: HLA-H3-130WTB

5.0 out of 5 stars ( 1 )

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Redhorse Performance 4910 Series Thermostat Housing Assemblies 4910-383-24-3

Water Neck, Aluminum, Red Anodized, O-Ring, 75 Degree, 1.500 in. Outlet, With Filler Neck for Radiator Cap, Chevy, Small/Big Block, Each

Part Number: HSE-4910-383-243

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

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Estimated Ship Date: May 15, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Moroso Manifold Filler Necks 63420

4 out of 5 stars ( 9 )

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KB Performance V-Twin Piston and Ring Kits KB294.040

Piston and Ring Kit, Hypereutectic, 3.665 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB294-040

Not Yet Reviewed

Estimated Ship Date: Jun 1, 2026 if ordered today

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Estimated Ship Date: Jun 1, 2026 if ordered today

E3 Spark Plugs E3.31

Spark Plug, E3, Gasket Seat, 14mm Thread, 0.750 in. Reach, Non-Projected Tip, Resistor, Each

Part Number: ETP-E3-31

5.0 out of 5 stars ( 7 )

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MotoRad STAT LOK Thermostat Gaskets and Seals MG53EA

Gasket, Water Neck Gasket, Paper, Chevy, Ford, GMC, Each

Part Number: SNN-MG53EA

Not Yet Reviewed

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JOES Racing Products Expansion Plug Fittings 36200

JOES Racing Products Expansion Plug Fittings 36200

Expansion Plug Fitting, Straight, Aluminum, Red, Block Connection, -8 AN Male Threads, Chevy, Small Block

Part Number: JOE-36200

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Redhorse Performance 4910 Series Thermostat Housing Assemblies 4910-350-20-2

Water Neck, Aluminum, Black Anodized, O-Ring, 75 Degree, 1.250 in. Outlet, Chevy, Small/Big Block, Each

Part Number: HSE-4910-350-202

Not Yet Reviewed

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Redhorse Performance 4910 Series Thermostat Housing Assemblies 4910-350-24-5

Water Neck, Aluminum, Clear Anodized, O-Ring, 75 Degree, 1.500 in. Outlet, Chevy, Small/Big Block, Each

Part Number: HSE-4910-350-245

Not Yet Reviewed

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ACCEL Motorcycle Single Fire Super Coils 140408

Ignition Coil, Motorcycle, Single Fire, Yellow, 3.0 Ohms Resistance, Each

Part Number: ALM-140408

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

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Estimated Ship Date: May 6, 2026 if ordered today

1973 Parts and Accessories