Honda 91205-RT4-003 – Left Driveshaft Oil Seal 42×58×12.5 mm

Honda 91205-RT4-003 – Left Driveshaft Oil Seal 42×58×12.5 mm

The Honda 91205-RT4-003 driveshaft oil seal is a genuine OEM seal for the left front axle shaft. It is installed in the transmission housing and seals the area where the driveshaft enters the gearbox, preventing transmission fluid leaks and protecting the differential from dirt and water.

With dimensions of 42×58×12.5 mm, this seal is designed for a perfect factory fit on selected Honda and Acura models equipped with automatic (AT) and manual (MT) transmissions. Using the original Honda seal helps maintain correct oil level in the gearbox and ensures long-term reliability of the driveline.

Key features – Honda driveshaft oil seal 91205-RT4-003

• Genuine Honda OEM part – exact fit, no modification needed.
• Precise dimensions: 42×58×12.5 mm – matched to the left driveshaft.
• High-quality sealing lip – resistant to heat, oil and road contamination.
• Protects the transmission – prevents fluid leaks and keeps dust and water out.
• Long service life – designed for high mileage and daily use.

When should you replace this seal?

It is recommended to replace the 91205-RT4-003 driveshaft seal whenever you:

• Remove the left driveshaft (e.g. for CV joint or clutch/gearbox work).
• Notice oil traces around the left axle output from the transmission.
• See drops of transmission fluid on the subframe or under the car near the left wheel.
• Hear the mechanic recommend replacing the axle seal as a preventive measure.

A worn or hardened seal can cause gearbox oil leaks, which may lead to increased wear of internal components. Fitting a new genuine Honda seal during service is a small cost that protects a much more expensive transmission.

Compatibility – Honda 91205-RT4-003 (left side)

This left driveshaft oil seal fits the following vehicles:

• Acura RDX (2015–2018) – automatic transmission, left side
• Acura MDX (2014–2015) – automatic transmission, left side
• Honda Accord Coupe 2D (2013–2017) – automatic transmission, left side
• Honda Accord Sedan 4D (2013–2018) – automatic transmission, left side
• Honda Civic Type-R (2015–2025) – manual transmission, left side
• Honda CR-V Diesel (2015, 2018) – manual transmission, left side
• Honda CR-V i-DTEC (2013–2017) – manual transmission, left side
• Honda Crosstour (2013–2015) – automatic transmission, left side
• Honda Pilot (2016–2020) – automatic transmission, left side
• Honda Odyssey (2011–2016) – automatic transmission, left side

Before ordering, always compare the part number 91205-RT4-003 with your VIN-based catalog data or ask your mechanic to confirm compatibility.

FAQ – Honda driveshaft oil seal 91205-RT4-003

Do I have to use an OEM seal?
You can use aftermarket parts, but a genuine Honda seal offers the best fit and long-term durability, especially on powerful or heavily loaded vehicles.

Is this the left or right side?
Part number 91205-RT4-003 is used on the left front driveshaft (gearbox side). The right side usually uses a different part number.

Can I reuse the old seal?
Reusing an old seal after removing the driveshaft is not recommended. Once disturbed, the sealing lip may no longer provide a tight, leak-free contact with the axle shaft.