Primary
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V-Twin - 42-1655 - Replica Inner Primary Cover Chrome - Fits 1941-1954 Harley-Davidson FL, 1936-1952 EL
V-Twin Mfg
MSRP: $283.21$168.662024 New Production replica inner primary cover features a chrome finish and includes drain fitting.Developed with new tooling for accurate reproduction! Inner cover includes hand shift guard that is...MSRP: $283.21$168.66 -
V-Twin - 42-1486 - Replica Inner Primary Cover Raw - Fits 1941-1954 Harley-Davidson FL, 1936-1952 EL
V-Twin Mfg
$294.392024 New Production replica inner primary cover features a raw finish and includes drain fitting.Developed with new tooling for accurate reproduction! Inner cover includes hand shift guard that is...$294.39 -
V-Twin - 42-1449 - Replica Inner Primary Cover Black - Fits 1941-1954 Harley-Davidson FL, 1936-1952 EL
V-Twin Mfg
MSRP: $283.21$168.662024 New Production replica inner primary cover features a black finish and includes drain fitting.Developed with new tooling for accurate reproduction! Inner cover includes hand shift guard that is...MSRP: $283.21$168.66 -
V-Twin - 42-1282 - Replica Inner Primary Cover Chrome - Fits 1955-1957 Harley-Davidson FL
V-Twin Mfg
$166.32Chrome inner primary cover. Primary cover comes without oil guard.Primary cover comes without oil guard. Oil drain fitting must be removed or relocated as necessary. Fits:FL 1955-1957Additional...$166.32 -
V-Twin - 42-1218 - Alternator Inner Primary Cover Steel Black - Fits 1970-1985 Harley-Davidson FL (applications with kickstarter)
V-Twin Mfg
$181.58Steel alternator type inner primary cover allows use of 1955-1964 type compensator outer covers on alternator, electric start must be sacrificed. Features a black finish. Fits:FL 1970-1985...$181.58 -
V-Twin - 42-1114 - Black 45 inch Outer Primary Cover Kit - Fits 1941-1952 Harley-Davidson W, 1941-1963 G
V-Twin Mfg
$286.40Black 45" outer primary cover kit includes black cover, inspection plates, and mount hardware.*NOTE: Features a steel construction. Fits:W 1941-1952G 1941-1963Additional Information$286.40 -
V-Twin - 42-1113 - Chrome 45 inch Outer Primary Cover Kit - Fits 1941-1952 Harley-Davidson W, 1941-1963 G
V-Twin Mfg
$272.59Chrome 45" outer primary cover kit includes chrome cover, 2 inspection plates, and mount hardware. Fits:W 1941-1952G 1941-1963Additional Information UOM<$272.59 -
V-Twin - 42-0996 - Chrome Primary Cover Trim - Fits 1994-2003 Harley-Davidson XL
V-Twin Mfg
$179.59Chrome primary cover trim is open derby type. Trim fully covers the existing primary and is secured in place by the existing screws.Reinstallation of clutch cable for installation is require. Fits:XL...$179.59 -
V-Twin - 42-0881 - Replica Outer Primary Cover Chrome - Fits 1955-1964 Harley-Davidson FL
V-Twin Mfg
$183.49Replica chrome steel outer primary has a deeper front cup to accept the compensator sprocket assembly or a tapered sprocket. Fits:FL 1955-1964Additional Information$183.49 -
V-Twin - 42-0880 - Replica Outer Primary Cover Flat Black - Fits 1955-1964 Harley-Davidson FL
V-Twin Mfg
$201.69Replica flat black outer primary has a deeper front cup to accept the compensator sprocket assembly or a tapered sprocket. Fits:FL 1955-1964Additional Information$201.69 -
V-Twin - 42-0868 - Chrome Primary Cover Clutch Adjuster Cap - Fits 1989-1993 Harley-Davidson XL
V-Twin Mfg
MSRP: $11.86$11.74Chrome primary cover clutch adjuster cap. Fits:XL 1989-1993Additional Information UOM1 - EA Manufacturer<MSRP: $11.86$11.74 -
V-Twin - 42-0862 - Replica Inner Primary Cover Chrome - Fits 1958-1964 Harley-Davidson FL
V-Twin Mfg
$163.24Replica chrome inner primary cover with drain fitting installed.Primary cover comes without oil guard. Oil drain fitting must be removed or relocated as necessary. Fits:FL 1958-1964Additional...$163.24 -
V-Twin - 42-0653 - Rear Chain Oiler Kit - Fits 1954-1964 Harley-Davidson FL
V-Twin Mfg
$19.66Rear chain oiler kit fits on the rear of the inner primary cover and includes screw. Fits:FL 1954-1964Additional Information OEM No.63591-62 <$19.66 -
V-Twin - 42-0609 - Primary Cover Inserts Chrome - Fits 1971-1976 Harley-Davidson XL
V-Twin Mfg
$9.76Primary cover insert comes with a double stick adhesive strip. Constructed of metal featuring a chrome finish. Fits:XL 1971-1976Additional Information UOM$9.76 -
V-Twin - 42-0601 - Oval Inspection Chrome - Fits 1970-1984 Harley-Davidson FL, 1986-2006 FLST, 1984-2006 FXST
V-Twin Mfg
$29.11Chrome oval inspection cover has a smooth chrome finish with 4 screw holes. Fits:FL 1970-1984FLST 1986-2006FXST 1984-2006Additional Information$29.11 -
V-Twin - 42-0600 - Oval Inspection Chrome Finned Type - Fits 1970-1984 Harley-Davidson FL, 1986-2006 FLST, 1984-2006 FXST
V-Twin Mfg
$15.70Finned oval inspection chrome for primary covers on Big Twin models. Fits:FL 1970-1984FLST 1986-2006FXST 1984-2006Additional Information UOM$15.70 -
V-Twin - 42-0385 - Replica Outer Primary Cover Chrome Kit - Fits 1955-1964 Harley-Davidson FL
V-Twin Mfg
$269.01Replica chrome outer primary cover kit includes original style chrome cover, chrome derby cover, chrome inspection cover, gaskets and screw kit.. Fits:FL 1955-1964Additional Information$269.01 -
V-Twin - 42-0372 - Black Primary Cover Kit - Fits 1941-1954 Harley-Davidson FL, 1941-1952 EL
V-Twin Mfg
$531.87Black primary cover kit.Includes inner and outer covers, gaskets, cadmium screws and derby and inspection covers. ...$531.87 -
V-Twin - 42-0360 - Primary Cover Trim Black - Fits 1994-2003 Harley-Davidson XL
V-Twin Mfg
MSRP: $136.66$127.48Black primary cover trim is open derby type. Trim fully covers the existing primary and is secured in place by the 5 existing screws. Fits:XL 1994-2003Additional InformationMSRP: $136.66$127.48 -
V-Twin - 42-0314 - Inner Primary Trim Chrome - Fits 1971-1984 Harley-Davidson FL, FX
V-Twin Mfg
MSRP: $43.51$42.64Chrome inner primary trim easily adapts to stock cast inner primary without complicated disassembly. Fits:FL 1971-1984FX 1971-1984Additional InformationMSRP: $43.51$42.64 -
V-Twin - 42-0234 - 45 inch Replica Outer Primary Cover Black - Fits 1941-1963 Harley-Davidson G
V-Twin Mfg
$272.5945" replica black outer primary cover Fits:G 1941-1963Additional Information OEM No.60504-32 UOM1 - E$272.59 -
V-Twin - 40-9982 - Rear Chain Oiler T
Wyatt Gatling
MSRP: $19.86$19.66V-Twin - 40-9982 - Rear Chain Oiler TDescriptionRear chain oiler T is for use with a primary cover. Fits:FX 1971-1978FL 1970-1978Additional InformationMSRP: $19.86$19.66 -
V-Twin - 40-9976 - Chain Oiler Fitting
Wyatt Gatling
MSRP: $19.86$19.66V-Twin - 40-9976 - Chain Oiler FittingDescriptionSide hole type chain oiler fitting is for extra chain oil. Fits:FL 1970-1984FX 1971-1984Additional InformationMSRP: $19.86$19.66 -
V-Twin - 40-9968 - Side Valve Primary Chain Oiler Tube
Wyatt Gatling
MSRP: $21.86$20.44V-Twin - 40-9968 - Side Valve Primary Chain Oiler Tube Description Primary chain oiler tube for 74", 80" and 45" Side Valve models, presses into the left side engine case. Fits: G 1937-1973 U...MSRP: $21.86$20.44 -
V-Twin - 40-0524 - Chain Oiler Fitting
Wyatt Gatling
MSRP: $22.30$20.85V-Twin - 40-0524 - Chain Oiler FittingDescriptionFitting attaches to inner primary cover with external hose barb connection. Fits:FL 1970-1984FX 1971-1984Additional InformationMSRP: $22.30$20.85 -
V-Twin - 40-0286 - Inner Primary Drain Fitting Tube Zinc - Fits 1941-1947 Harley-Davidson FL, 1936-1940 EL, 1937-1948 UL
V-Twin Mfg
MSRP: $30.45$30.17Description Inner primary drain fitting tube with nut features a zinc finish.Inner primery at correct point for drain tube, use drift punch with taper to "swage" the hole larger to accommodate the...MSRP: $30.45$30.17 -
V-Twin - 40-0176 - Primary Oil Fitting
Colony Machine
MSRP: $31.13$29.10V-Twin - 40-0176 - Primary Oil FittingDescriptionPrimary fitting for cover. Fits:FL 1936-1964Additional Information OEM No.<MSRP: $31.13$29.10 -
V-Twin - 3785-1 - Inner Primary Cover Reinforcement Ring
Colony Machine
$34.08V-Twin - 3785-1 - Inner Primary Cover Reinforcement RingDescriptionInner primary reinforcement ring fits inner primary cover at engine crank shaft. Fits:FL 1941-1954EL 1936-1940UL 1938-1948Additional...$34.08 -
V-Twin - 3769-7 - Right Side Transmission Cover Support Bracket Mount Kit
Colony Machine
MSRP: $21.88$18.59V-Twin - 3769-7 - Right Side Transmission Cover Support Bracket Mount KitDescriptionRight side transmission cover support bracket mount kit includes a stud, spacers, grommets, nut and lock washer...MSRP: $21.88$18.59 -
V-Twin - 37-9030 - Chain Tensioner Screws - Fits 1991-2005 Harley-Davidson FXD, 1986-2006 FLST, 1984-2006 FXST, 1965-1984 FL, 1971-1984 FX, 1984-2005 FLT, 1984-1994 FXR
V-Twin Mfg
$13.50Chain tensioner screws has phillips flat head Fits:FXD 1991-2005FLST 1986-2006FXST 1984-2006FL 1965-1984FX 1971-1984FLT 1984-2005FXR 1984-1994Additional Information$13.50 -
V-Twin - 37-8999 - Primary Cover Cap Set Chrome - Fits 1971-1976 Harley-Davidson XL
V-Twin Mfg
MSRP: $45.13$44.22Chrome hex head primary cover filler and clutch hole cap are easily installed and removed with a standard 15/16" wrench. Fits:XL 1971-1976Additional Information UMSRP: $45.13$44.22 -
V-Twin - 37-8991 - Primary Cap Set Chrome - Fits 1986-1990 Harley-Davidson XL
V-Twin Mfg
MSRP: $45.13$44.22Inspection Cover Set in rich chrome, hex style, for clutch and chain on primary cover. Years 1986 through 1990.*NOTE: Non-vented type. Fits:XL 1986-1990Additional InformationMSRP: $45.13$44.22 -
V-Twin - 37-8989 - Primary Cover Cap Set Chrome - Fits 1977-1984 Harley-Davidson XL
V-Twin Mfg
$46.00Chrome hex head primary cover filler and clutch hole cap are easily installed and removaled with a standard 15/16" wrench. Fits:XL 1977-1984Additional Information$46.00 -
V-Twin - 37-8934 - Magnetic Inner Primary Drain Plug - Fits 1987-1989 Harley-Davidson FLST, FXST, FXR
V-Twin Mfg
MSRP: $13.14$13.00Magnetic drain plug prevents metal particles from circulating through engine, transmission and oil tanks. Plug is 1/8" - 27 national pipe thread. Fits:FLST 1987-1989FXST 1987-1989FXR...MSRP: $13.14$13.00 -
V-Twin - 37-8931 - Primary Cover Seal Washer - Fits 1986-2006 Harley-Davidson FLST, 1984-2006 FXST
V-Twin Mfg
$22.96Primary cover seal washer with o-ring Fits:FLST 1986-2006FXST 1984-2006Additional Information OEM No.31433-84A$22.96 -
V-Twin - 37-8803 - Inner Primary Safety Bolt - Fits 1971-1984 Harley-Davidson FL, FX
V-Twin Mfg
$25.37Inner primary safety bolt Fits:FL 1971-1984FX 1971-1984Additional Information OEM No.4021 UOM$25.37 -
V-Twin - 37-8690 - Primary Cover Cap Set Chrome - Fits 1986-1990 Harley-Davidson XL
V-Twin Mfg
$48.22Chrome primary cover cap set Fits:XL 1986-1990Additional Information OEM No.34745-87 UOM1 - SET<$48.22 -
V-Twin - 37-8666 - Inner Primary Mount Kit Aluminum - Fits 1970-1979 Harley-Davidson FL, 1971-1979 FX
V-Twin Mfg
$45.05Aluminum inner priamry mount Fits:FL 1970-1979FX 1971-1979Additional Information UOM1 - KIT Manufactu$45.05 -
V-Twin - 37-8349 - Primary Cover Hole Plug Chrome - Fits 1954-1964 Harley-Davidson FL
V-Twin Mfg
$25.37Chrome primary cover hole plug Fits:FL 1954-1964Additional Information OEM No.60650-54A UOM5 - PK$25.37 -
V-Twin - 37-7784 - Primary Cover Cap Set Chrome - Fits 1977-1984 Harley-Davidson XL
V-Twin Mfg
$32.07Chrome stock type primary cover filler and clutch hole cap are easily installed and removable with a standard primary plug wrench.Both caps are non-vented. Fits:XL 1977-1984Additional Information$32.07
Harley Primary
Upgrade your Harley primary system with premium components designed for peak performance and durability. Found under our Clutch, Driveline & Transmission category, these parts are engineered to ensure smoother power delivery, reduced vibration, and more efficient drivetrain operation. Whether you're maintaining or upgrading, a strong Harley primary setup is key to getting the most out of your ride.
Our collection includes high-quality Harley primary covers, primary chains, compensator sprockets, clutch baskets, and both inner and outer primary components—all crafted from durable materials like forged steel and precision-machined aluminum. Built to handle aggressive riding and tough conditions, these parts meet or exceed OEM standards.
Don’t settle for less. Explore our full range of Harley primary parts and Harley primary covers today and feel the performance difference every time you hit the throttle.