Availability
1978 Parts and Accessories
Valve Springs, Lightweight Racing, Dual, Steel Retainers, Steel Locks, Harley-Davidson®, Kit
Part Number: KPM-20-20450
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Rocker Box Oil Lines, Chrome Fittings, Harley-Davidson®, Kit
Part Number: BKC-49-2651
Not Yet Reviewed
Estimated Ship Date: Apr 14, 2026 if ordered today
Estimated Ship Date: Apr 14, 2026 if ordered today
Battery, Shocker, Starting, AGM, 12 V, 310 Cold Cranking Amps (Measured At -18 degrees), Top and Side Terminals, Harley-Davidson®, Indian, Each
Part Number: TWP-GHDZ20H-BS
Not Yet Reviewed
Cannot be shipped Internationally if ordered today
Cannot be shipped Internationally if ordered today
Battery, YuMicron, Starting, 12 V, Wet Cell, Sold Dry, 260 Cold Cranking Amps, Top Terminals, for use on Honda®, Bombardier, Kawasaki, Yamaha, Each
Part Number: YSA-Y50-N18L-A
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Aluminum, Blue Anodized, O-Ring, 75 Degree, 1.500 in. Outlet, With Filler Neck for Radiator Cap, Chevy, Small/Big Block, Each
Part Number: HSE-4910-383-241
Not Yet Reviewed
Estimated Ship Date: Apr 20, 2026 if ordered today
Estimated Ship Date: Apr 20, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Water Neck, Aluminum, Red Anodized, O-Ring, 75 Degree, 1.250 in. Outlet, With Filler Neck for Radiator Cap, Chevy, Small/Big Block, Each
Part Number: HSE-4910-383-203
Not Yet Reviewed
Estimated Ship Date: Apr 20, 2026 if ordered today
Estimated Ship Date: Apr 20, 2026 if ordered today
Starter Solenoid, Chrome Plated, Harley-Davidson®, Each
Part Number: ALM-40111C
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
This product may not be eligible for select promotional offers
Windshield, Deflector Screen, Front High Height Style, Polycarbonate, Light Gray, for use on Honda®, Harley-Davidson®, BMW, Ducati, Kawasaki, Each
Part Number: NCL-N25031
Not Yet Reviewed
Estimated Ship Date: Apr 20, 2026 if ordered today
Estimated Ship Date: Apr 20, 2026 if ordered today
Oil Filter, Cartridge, Kawasaki, Each
Part Number: BKM-17-1612
Not Yet Reviewed
Estimated Ship Date: Apr 14, 2026 if ordered today
Estimated Ship Date: Apr 14, 2026 if ordered today
Air Filter, Multi-Stage Competition, Foam, Red, Suzuki, Each
Part Number: UFI-NU2417ST
Not Yet Reviewed
Estimated Ship Date: Apr 14, 2026 if ordered today
Estimated Ship Date: Apr 14, 2026 if ordered today
Air Filter, Multi-Stage Competition, Foam, Red, for use on Honda®, Each
Part Number: UFI-NU-4025ST
Not Yet Reviewed
Estimated Ship Date: Apr 14, 2026 if ordered today
Estimated Ship Date: Apr 14, 2026 if ordered today
Mirror, Right Side, Custom, Round, Convex, Manual, 4.00 in. Diameter, Chrome Housing, Harley-Davidson®, Each
Part Number: BKC-48-9711
Not Yet Reviewed
Estimated Ship Date: Apr 14, 2026 if ordered today
Estimated Ship Date: Apr 14, 2026 if ordered today
Engine Piston Ring Set, Single Cyl Ring Set; Plasma Moly
Part Number: HSN-2M6482S040
Not Yet Reviewed
Estimated Ship Date: Apr 16, 2026 if ordered today
Estimated Ship Date: Apr 16, 2026 if ordered today
Spark Plug Wires, 409 Pro Race, 10.40mm, Red Wire, Spiral Core, Pair
Part Number: TAY-13230
Estimated Ship Date: Apr 16, 2026 if ordered today
Estimated Ship Date: Apr 16, 2026 if ordered today
Brake Line Kit, Front, Fits Harley, FLH/FLHF, 72-78
Part Number: RUS-R08903S
Estimated Ship Date: Apr 27, 2026 if ordered today
Estimated Ship Date: Apr 27, 2026 if ordered today
Brake Pads, Organic, for use on Honda®, Motorcycle, Set
Part Number: EBP-FA29
Not Yet Reviewed
Estimated Ship Date: Apr 23, 2026 if ordered today
Estimated Ship Date: Apr 23, 2026 if ordered today
Windshield, Deflector Screen, Front High Height Style, Polycarbonate, Clear, for use on Honda®, Harley-Davidson®, BMW, Ducati, Kawasaki, KTM, Each
Part Number: NCL-N25030
Estimated Ship Date: Apr 20, 2026 if ordered today
Estimated Ship Date: Apr 20, 2026 if ordered today
Wiseco Powersports 2-Stroke Forged Series Piston Kits for 1978-2000 DS80, 1977-1981 RM80 - 456M05050
Wiseco Powersports 2-Stroke Forged Series Piston Kits for 1978-2000 DS80, 1977-1981 RM80 - 456M05050
Engine Piston, Suzuki RM80 '77-81, DS80 '78-00 1988CD
Part Number: WIS-456M05050
Not Yet Reviewed
Estimated Ship Date: Apr 22, 2026 if ordered today
Estimated Ship Date: Apr 22, 2026 if ordered today
Engine Piston, Yamaha SRX440/SSR440LC '78-80 2717CS
Part Number: WIS-2282M06900
Not Yet Reviewed
Estimated Ship Date: Apr 22, 2026 if ordered today
Estimated Ship Date: Apr 22, 2026 if ordered today
Windshield, Viper, Front Mid Height, Acrylic, Clear, 22.25 in. Width, 17.25 in. Height, 7/8 in 1 in. Handlebars, Each
Part Number: SRI-SS-10-C
Not Yet Reviewed
Estimated Ship Date: Apr 21, 2026 if ordered today
Estimated Ship Date: Apr 21, 2026 if ordered today
Water Neck, Aluminum, Blue Anodized, O-Ring, 75 Degree, 1.250 in. Outlet, Chevy, Small/Big Block, Each
Part Number: HSE-4910-350-201
Not Yet Reviewed
Estimated Ship Date: Apr 20, 2026 if ordered today
Estimated Ship Date: Apr 20, 2026 if ordered today
Oil Filters, Powersports, Cartridge, High Flow, 1.78 in. Tall, 0.75 in. I.D., 2.72 in. O.D., Nitrile Rubber, for use on Honda®, Each
Part Number: KNN-KN-111
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Aluminum, Black Anodized, O-Ring, 75 Degree, 1.500 in. Outlet, Pontiac, Small/Big Block, Each
Part Number: HSE-4910-455-242
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Water Neck, Aluminum, Red Anodized, O-Ring, 75 Degree, 1.250 in. Outlet, Chevy, Small/Big Block, Each
Part Number: HSE-4910-350-203
Not Yet Reviewed
Estimated Ship Date: Apr 20, 2026 if ordered today
Estimated Ship Date: Apr 20, 2026 if ordered today
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: Apr 20, 2026 if ordered today
Estimated Ship Date: Apr 20, 2026 if ordered today
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster