Help keep lubricant sealed inside the front differential and dirt and water out with this SKF differential pinion seal, part number 18730. It is a front-position seal for the 1999-2013 Ford F-250 Super Duty, 2001-2013 Ford F-350 Super Duty, 2007-2013 Ford F-450 Super Duty and 2007-2013 Ford F-550 Super Duty. See the Buyer's Guide tab for engine details.
The pinion seal sits in the differential housing where the pinion shaft exits. The seal body stays stationary while its sealing lip contacts the rotating pinion yoke.
SKF introduced the first integrated shaft seal in 1928 and has kept developing new seal designs and bonding techniques. Its seals are made to specific designs, with materials chosen to suit both the application and its operating environment.
Signs this seal may need replacing include lubricant seeping or dripping around the pinion yoke where the driveshaft connects, an oily film on the housing near the seal, or a low differential fluid level. Confirm the source of a leak before you replace the seal.
Interchange: 5012847AA · 5016792AA · 4135403100 · 108048 · 8C3Z4L616A · 8C3Z4L616B · F81Z4676DA · 280470M1 · 27SS5403 · 946243
This part cross-references / interchanges with the following part numbers:
What does a differential pinion seal do?
It seals the opening where the pinion shaft exits the differential housing. It helps keep lubricant in and dirt and water out while the pinion yoke turns against its lip.
Which trucks does SKF 18730 fit?
It is listed for the 1999-2013 Ford F-250 Super Duty, 2001-2013 Ford F-350 Super Duty, 2007-2013 Ford F-450 Super Duty and 2007-2013 Ford F-550 Super Duty. See the Buyer's Guide tab for details.
Is SKF 18730 a front or rear differential seal?
SKF 18730 is cataloged for the front position on the listed Ford Super Duty applications.
What is the seal's case made of?
The body is deep-drawn sheet steel, which forms a rigid, stress-resistant metal case. The garter spring is made from cold-drawn steel wire.
What are signs the pinion seal may need replacing?
Common signs include lubricant seeping or dripping around the pinion yoke where the driveshaft connects, an oily film on the housing near the seal, or a low differential fluid level. Confirm the leak source before replacing.
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.
