Cylinder Heads

S&S Cycle - Headbolt Kit fits '84-'99 Evolution Big Twin, '99-'17 Twin Cam & '86-'21 XL Models (exc. '21 S/RH1250S) This complete headbolt kit features 12-point bolts and is built with pride in the U.S.A.

Colony - Head Bolt Set fits '99-'17 Twin Cam & '92-'22 Sportster Models (Except RH Sportster (OEM #16478-85A, 16480-92)) Features: 12-point replacement headbolts Made in the U.S.A. Fitment 2016-2017 Harley-Davidson Softail Slim S...

Feuling - Red Cylinder Head Breathers fits '18 & Up M8 Harley Model These cylinder head breathers are constructed from billet 6061 aluminum with square surfaces, guaranteeing outstanding umbrella valve sealing and longer main breather exit nipples...

Feuling - Headbolt Kit fits '99-'17 Twin Cam and '92-'22 Sportster Models (exc. '21-'22 Sportster S/RH1250S, 22 Nightster/RH975) This kit features wide underhead flange bolts and hardened chamfered washers that provide even load distribution for the...

Kibblewhite - 20-23100 - Valve Kit - 1.805" Intake/1.575" Exhaust - 88"/96"/103" Twin Cam '05-'17FeaturesAll valves are fortified by a special process to a depth of .002” with a surface buildup of .0002”This process improves wear properties, reduces...

Colony - 9760-4 Allen Type Tappet Block Screw Kit fits '95-'03 Sportster Models Tappet block allen type screw kit. Fitment: XL 1995-2003

S&S Cycle - Super Stock™ '66-'78 Style Cylinder Head Kit for Stock Bore Cylinders W/ O-Ring Intake Complete kits also include rocker cover gaskets, head gaskets and miscellaneous hardware with instructions Use OEM manifolds and...

S&S Cycle - Super Stock™ '79-'84 Style Cylinder Head Kit for Stock Bore Cylinders W/ Rubber Band Intake This Cylinder Head Kit uses a band-style intake (not included). Sold in pairs, built with pride in the U.S.A. Features Heads come...

V-Twin - 49-7676 - Indian Chief Aluminum Head Bolt SetDescriptionIndian Chief aluminum head bolt set Fits:ChiefAdditional Information OEM No.I32I0359D UOM1 - KIT ManufacturerV-Twin OriginUSA 2025 Catalog Pages825

V-Twin - 49-1348 - 1936 EL Cylinder Head Set BareDescriptionBare Knucklehead cylinder head set features a cast iron construction with factory casting marks. This is the exact replica of the 1936 EL models, for 61" motors. Features a black painted finish...

V-Twin - 49-1310 - 1937-1938 EL Knucklehead Bare Cylinder Head SetDescription1937-1938 EL bare Knucklehead head set features OEM production numbers, mc hallmark, small intake port, primer black plugs, manifold nipples and are painted with black heat...

V-Twin - 49-1038 - 45 Rear Cylinder HeadDescription45 rear cylinder head only. Fits:G 1941-1973WL 1941-1952Additional Information OEM No.379-403R UOM1 - EA ManufacturerV-Twin OriginImported

V-Twin - 49-1019 - WLDR Cylinder Head Set Description Cylinder head set features special 69cc combustion chamber and accepts 18mm spark plugs and head bolts.Heads are for use on stock 45 cylinders, not the WR angled type. *NOTE: Must order head bolts...

V-Twin - 49-0945 - 6:1 High Compression Head Set AluminumDescriptionHeads have a steel insert, cast in, to accept the 18mm spark plug.Combustion champer is 10.5mm deep. Sold as a set of 2. Fits:G 1939-1973WLD 1939-1946W 1939-1952Additional Information ...

V-Twin - 49-0908 - 5:1 Low Compression Head Set AluminumDescriptionHeads have a steel insert, cast in to accept the 18mm spark plug.Combustion chamber is 10.5mm deep. Fits:WLD 1940-1942WLDR 1940-1941WL 1947-1957Additional Information OEM No.16683-39 ...

V-Twin - 49-0668 - Nickel Plated Head Primer CupsDescriptionHead prime cups are for Flathead and Overhead Valve models and features a nickel plated finish, for exact applications or restoration.Includes knurled knob and valve insert. Fits:EL 1936-1938FL...

V-Twin - 49-0276 - Long HeadboltDescriptionLong headbolt for side valve models Fits:G 1965-1973Additional Information OEM No.14-4OMA UOM1 - SET ManufacturerV-Twin OriginUSA 2025 Catalog Pages795

V-Twin - 49-0055 - Indian Aluminum Head Bolt WasherDescriptionIndian aluminum head bolt washer Fits:Chief 1936-1953Additional Information OEM No.I37618 UOM20 - PK ManufacturerV-Twin OriginUSA 2025 Catalog Pages825

V-Twin - 49-0009 - Brass Head Primer CupsDescriptionHead primer cups are for Flathead and Overhead Valve models and features a solid brass construction for exact applications or restoration.Includes knurled knob and valve insert. Fits:UL 1937-1938EL...

V-Twin - 42-6174 - Lower Valve Spring Cup Set ParkerizedDescriptionParkerized lower valve spring cup set includes 4 piece set of lower covers with oil lines and nuts attached.Kit also includes rocker cover strip set with screws and cover set with gaskets...

V-Twin - 42-3637 - Lower Valve Spring Cup Set ParkerizedDescriptionInclude 4 piece set of lower covers with steel oil lines and nuts brazed in place and 4 piece cover set, which features a parkerized finish.Complete set for four valves include four snap...

V-Twin - 42-1170 - M8 Finned Spark Plug Cover Set GraniteDescriptionGranite finned spark plug cover set for M8 models. Fits:FLT 2017-UPAdditional Information OEM No.25800062 UOM1 - SET ManufacturerV-Twin OriginImported 2025 Catalog Pages33

V-Twin - 42-1160 - M8 Finned Spark Plug Cover Set BlackDescriptionBlack finned spark plug cover set for M8 models. Fits:FLT 2017-UPAdditional Information OEM No.25800061 UOM1 - SET ManufacturerV-Twin OriginImported 2025 Catalog Pages33

V-Twin - 42-1158 - Head Bolt and Spark Plug Cover Kit ChromeDescriptionChrome cylinder head bolt and spark plug cover kit. Fits:XL 2004-UPAdditional Information OEM No.44432-04 UOM1 - KIT ManufacturerV-Twin OriginImported 2025 Catalog Pages854

V-Twin - 42-1157 - Head Bolt and Spark Plug Cover Kit BlackDescriptionBlack cylinder head bolt and spark plug cover kit. Fits:XL 2004-UPAdditional Information UOM1 - KIT ManufacturerV-Twin OriginImported 2025 Catalog Pages854

V-Twin - 42-1156 - Head Bolt and Spark Plug Cover Kit SilverDescriptionSilver cylinder head bolt and spark plug cover kit. Fits:XL 2004-UPAdditional Information OEM No.44296-04 UOM1 - KIT ManufacturerV-Twin OriginImported 2025 Catalog Pages854

V-Twin - 42-1154 - Head Bolt and Spark Plug Cover Kit SilverDescriptionSilver cylinder head bolt and spark plug cover kit for carbureted models. Fits:FLST 1999-2006FXST 1999-2006FLT 1999-2006FXD 1999-2006Additional Information OEM No.43840-01 UOM1 -...

V-Twin - 42-1153 - Head Bolt and Spark Plug Cover Kit BlackDescriptionBlack cylinder head bolt and spark plug cover kit for EFI models. Fits:FLT 1999-2016FLST 2000-UPFXST 2000-UPFXD 1999-2017Additional Information OEM No.43859-00 UOM1 - KIT ...

V-Twin - 42-1092 - Brass Cylinder Head Bolt CoverDescriptionSolid brass cylinder head bolt cover is a four piece set. Fits:FXD 1991-2017FLST 1986-2017FXST 1984-2017FXR 1984-1994FLT 1984-2017Additional Information UOM1 - SET ManufacturerV-Twin ...

V-Twin - 42-0772 - Cylinder Head Locker AluminumDescriptionCylinder head locker fits Big Twin 1340 models in shot peened natural aluminum. Set screws are included for installation. Fits:FXR 1986-1991FXST 1986-1991FLST 1986-1991FLT 1986-1991Additional...

V-Twin - 37-9399 - Cylinder Headbolt Cover Set BlackDescription4 piece cylinder headbolt cover set features a black finish. Fits:XL 1986-UPFLST 1986-UPFXST 1986-UPFLT 1986-UPFXR 1986-UPAdditional Information UOM1 - SET ManufacturerV-Twin ...

V-Twin - 37-9370 - Head Bolt Hardware KitDescriptionHead bolt hardware kit for one head. Fits:XL 1986-1992Additional Information UOM1 - KIT ManufacturerV-Twin OriginUSA 2025 Catalog Pages854 Replacement Items37-9260 - *UPDATE Cylinder Stud...

V-Twin - 37-9131 - Head Bolt Cover Set ChromeDescriptionChrome grooved head bolt cover set. Fits:FXD 1991-2017FLT 1986-2017XL 1986-UPFXST 1986-2017FXR 1986-1994FLST 1986-2017Additional Information OEM No.43890-93 UOM4 - SET ManufacturerV-Twin ...

V-Twin - 37-9019 - Head Bolt Set ChromeDescriptionChrome 12 point head bolt set Fits:FXR 1986-1991FXD 1991-1991XL 1986-1992FXST 1986-1991FLST 1986-1991FLT 1986-1991Additional Information UOM1 - KIT ManufacturerV-Twin OriginImported 2025 Catalog...

V-Twin - 37-8897 - Head Bolt Cover Set Dome ChromeDescriptionChrome dome style head bolt cover set Fits:FXST 1984-1985FLT 1984-1985FXR 1984-1985Additional Information UOM4 - SET ManufacturerV-Twin OriginImported 2025 Catalog Pages36

V-Twin - 37-8831 - Cylinder Headbolt Set ChromeDescriptionChrome cylinder headbolt set with coarse thread for use with early style STD heads only. Fits:Special applicationAdditional Information UOM10 - SET ManufacturerGardner-Westcott OriginUSA 2025...

V-Twin - 37-8799 - Cylinder Headbolt Cover Set ChromeDescription4 piece cylinder headbolt cover set featuring a chrome finish. Fits:FXD 1991-2017FLT 1986-2017XL 1986-UPFXST 1986-2017FXR 1986-1994FLST 1986-2017Additional Information OEM No.43890-93 UOM1...

V-Twin - 37-1209 - Head Bolt Cover Set ChromeDescriptionChrome head bolt cover set.Sold as a set of 4. Fits:FLT 1999-2016FXST 1999-UPFLST 1999-UPFXD 1999-2017Additional Information UOM1 - SET MeasurementsAdditional InformationHeight: 5/8"Base...

V-Twin - 3127-20 - Parkerized Headbolt KitDescriptionParkerized plain headbolt kit includes washers. Fits:FL 1940-1947Additional Information UOM1 - KIT ManufacturerColony OriginUSA 2025 Catalog Pages515

V-Twin - 2947-1 - Aluminum Cylinder Head Bracket ChromeDescriptionAluminum cylinder head bracket features a chrome finish. Fits:WL 1936-1952G 1936-1973Additional Information OEM No.2806-40 UOM1 - EA ManufacturerColony OriginUSA 2025 Catalog Pages795