Support the rotating shafts in your axle, transfer case, or transmission with the National A-18 bearing (also written A18). It is cataloged as a replacement for a wide range of vehicles, including the 1997-2003 Ford F-150 and 2003-2011 Jeep Wrangler.
A bearing supports a rotating shaft and lets it turn with low friction under load. The A-18 is used in several drivetrain locations, so National lists it under multiple part types.
Signs that a bearing may need replacing include a whine, growl, or rumble that changes with vehicle speed, roughness, or excess play at the shaft. If a worn bearing is the cause, the A-18 replaces that component. Diagnose the source of the noise before replacing parts. See the Buyer's Guide tab for the full list of applications, positions, and quantities.
What does the National A-18 bearing do?
It supports a rotating shaft so the shaft can turn with low friction under load. Depending on the vehicle, it is cataloged for axle differential, transfer case, transmission, or wheel bearing locations.
Which position does the A-18 fit?
It is cataloged for front, rear, right, front outer, front inner, rear outer, and rear inner positions, depending on the application. See the Buyer's Guide tab for your vehicle's listing.
How many A-18 bearings do I need?
The quantity per application varies by vehicle and location. Check the quantity shown for your vehicle in the Buyer's Guide tab.
Which vehicles does the A-18 fit?
Applications include the 1997-2003 Ford F-150 and 2003-2011 Jeep Wrangler, among many other vehicles. See the Buyer's Guide tab for the full list.
What are the signs of a worn bearing?
A whine, growl, or rumble that changes with speed, roughness, or excess shaft play can be signs of a worn bearing. Other components can cause similar symptoms, so diagnose the noise source before replacing parts.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
