National 710157 Manual Transmission Input Shaft Seal

Manual Transmission Input Shaft Seal for Honda and Acura

National 710157 is a manual transmission input shaft seal built for metric applications that require a precise sealing fit. It uses nitrile material and a clockwise-spiral lip design to help maintain a consistent seal at the transmission input shaft.

Compatible With Honda Accord, Civic, Element, CR-V, S2000, and Acura TL, TSX, RSX, CL, ILX, CSX, and Legend applications across the listed model years. This part number, 710157, is also referenced in OE-style replacement searches for Honda and Acura manual transmission sealing service.

Key Features

• Nitrile construction for transmission sealing applications
• Clockwise-spiral lip design
• Metric dimensions for accurate housing and shaft fit
• Inside diameter: 1.102 in. / 28.000 mm
• Outside diameter: 1.702 in. / 43.230 mm
• Width: 0.276 in. / 7.000 mm
• Housing bore: 1.693 in. / 43.000 mm
• Part description: oil seal

Detailed Description

National 710157 is a manual transmission input shaft seal engineered for vehicles that use a 28 mm shaft and a 43.230 mm outside diameter seal profile. The nitrile sealing material and spiral-lip geometry are specified to support controlled contact at the shaft surface, which is important in manual transmission service where fluid retention and contamination control matter. National has supplied sealing products for decades and continues to develop sealing solutions for modern vehicle platforms.

Use this seal when servicing Honda Accord, Honda Civic, Honda Element, Honda CR-V, Honda S2000, Acura TL, Acura TSX, Acura RSX, Acura CL, Acura ILX, Acura CSX, and Acura Legend manual transmission applications listed in the fitment data. Part number 710157 is also cross-referenced as an OE-style replacement for select Honda and Acura transmission service needs.

What This Seal Helps Address

• Transmission fluid seepage at the input shaft area
• Oil contamination around the bellhousing or transmission case
• Seal wear from age, heat, and shaft rotation
• Service replacement during manual transmission repair
• Loss of sealing performance caused by hardened or damaged seal material

Installation Notes and Tips

• Verify shaft diameter, housing bore, and width before installation.
• Inspect the input shaft surface for scoring or corrosion before fitting the seal.
• Clean the bore and sealing surface thoroughly to avoid premature leakage.
• Install with the lip oriented correctly for the transmission application.
• Confirm the transmission code when servicing 2002 Acura RSX models with Honda PPTA or PNSA transmissions.

Quality Assurance

National is a long-established sealing brand with more than 75 years of experience in sealing technology. The 710157 seal reflects that focus on dimensional accuracy and application-specific design for manual transmission service.

• Fits 2003-2017 Honda Accord
• Fits 2013-2015 Acura ILX
• Fits 2010-2014 Acura TL
• Fits 2004-2008 Acura TL
• Fits 2004-2014 Acura TSX
• Fits 2006-2011 Honda Civic
• Fits 2007-2010 Acura CSX
• Fits 2003-2010 Honda Element
• Fits 2000-2009 Honda S2000
• Fits 2003-2006 Acura RSX
• Fits 2002-2006 Honda CR-V
• Fits 2003 Acura CL
• Fits 2002 Acura RSX with Honda PPTA Transmission
• Fits 2002 Acura RSX with Honda PNSA Transmission
• Fits 1991-1995 Acura Legend
• Fits 1986-1987 Acura Legend