PROX Crankshaft Oil Seal for BETA RR 350, RR 390, RR 400, RR 430, RR 450, RR 480, RR 498, RR 520, RX 450 2010-2026

PROX offers this crankshaft oil seal for BETA RR 350, RR 390, RR 400, RR 430, RR 450, RR 480, RR 498, RR 520, RX 450 2010-2026. On a 2-stroke it keeps the crankcase airtight, which a steady idle depends on; on a 4-stroke it keeps the engine oil in.

Why replace this oil seal?

The benefits:

• Stop an air leak or an oil leak at the crankshaft.
• On a 2-stroke, restore a steady idle and consistent carburetion.
• An inexpensive part to change every time the cases are split.

Why choose PROX?

ProX, the Dutch engine-parts specialist since 1975, has its parts made in factories that also supply the manufacturers: OEM quality at a more affordable price.

When should you replace the oil seals on your BETA RR 390?

Seepage around the shaft, a dropping oil level or, on a two-stroke, an idle that creeps up on its own are warning signs. The seal is also replaced every time the cases are split.

Specifications and fitting tips

• Dimensions: 35x47x6 mm
• Manufacturer part number: 41.7-65900

Spare parts and items to plan

• Crankshaft bearings and seals : see the selection
• Ignition cover gasket : ATHENA
• Complete engine gasket kit : see the selection

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
BETA RR 350 2024
BETA RR 350 2023
BETA RR 350 2022
BETA RR 350 2021
BETA RR 350 2020
BETA RR 350 2019
BETA RR 350 2018
BETA RR 350 2017
BETA RR 350 2016
BETA RR 350 2015
BETA RR 390 2024
BETA RR 390 2023
BETA RR 390 2022
BETA RR 390 2021
BETA RR 390 2020
BETA RR 390 2019
BETA RR 390 2018
BETA RR 390 2017
BETA RR 390 2016
BETA RR 390 2015
BETA RR 390 2014
BETA RR 400 2014
BETA RR 400 2013
BETA RR 400 2012
BETA RR 400 2011
BETA RR 400 2010
BETA RR 430 2024
BETA RR 430 2023
BETA RR 430 2022
BETA RR 430 2021
BETA RR 430 2020
BETA RR 430 2019
BETA RR 430 2018
BETA RR 430 2017
BETA RR 430 2016
BETA RR 430 2015
BETA RR 430 2014
BETA RR 450 2014
BETA RR 450 2013
BETA RR 450 2012
BETA RR 450 2011
BETA RR 450 2010
BETA RR 480 2024
BETA RR 480 2023
BETA RR 480 2022
BETA RR 480 2021
BETA RR 480 2020
BETA RR 480 2019
BETA RR 480 2018
BETA RR 480 2017
BETA RR 480 2016
BETA RR 480 2015
BETA RR 480 2014
BETA RR 498 2014
BETA RR 498 2013
BETA RR 498 2012
BETA RR 520 2011
BETA RR 520 2010
BETA RX 450 2026
BETA RX 450 2025
BETA RX 450 2024