Keep gear oil sealed inside the rear differential and grit out of the pinion with the SKF Differential Pinion Seal 18948. It drops in as a direct-fit replacement for the listed applications: the 1953-1956 and 1958-1959 Cadillac DeVille, the 1950-1959 Cadillac Series 60 Fleetwood, and the 1946-1952 Cadillac Series 75 Fleetwood (All engines).
This rear pinion seal seats in the differential housing where the pinion shaft enters. The metal case stays stationary while the sealing lip rides on the rotating pinion, holding differential gear oil in and keeping dirt and water out.
- Cold-drawn steel garter spring: uses cold-drawn steel wire for superior fluid retention.
- Deep-drawn sheet steel body: forms a rigid, stress-resistant metal case.
- Nitrile sealing surface: the sealing surface is nitrile.
- Superior protection: guards against dirt and water.
Dimensions: 3.750 in outside diameter, 1.875 in inside diameter, 1.875 in shaft diameter, and 0.430 in width. If a worn or leaking pinion seal is the cause of gear oil weeping at the differential nose, this replaces it. Country of origin: Taiwan.
Interchange: 975918948 · CHR 18948 · 1458709 · 1471763 · 1471764 · 1474906 · 3630051 · AX660 · 145818948 · 450653N · 6852 · A46624 · A85034P · T456053 · Manufacturer part number 18948.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What is the SKF 18948?
It is a rear differential pinion seal that fits around the pinion shaft in the differential housing, holding gear oil in and keeping dirt and water out.
Which vehicles does it fit?
The 1953-1956 and 1958-1959 Cadillac DeVille, the 1950-1959 Cadillac Series 60 Fleetwood, and the 1946-1952 Cadillac Series 75 Fleetwood (All engines). See the Buyer's Guide tab.
What are the seal's dimensions?
It measures 3.750 in outside diameter, 1.875 in inside diameter, 1.875 in shaft diameter, and 0.430 in width, with a nitrile sealing surface.
How do I know it may need replacing?
Gear oil seeping or dripping at the pinion where the driveshaft meets the differential can be a sign the pinion seal may need replacing; diagnose the source before you replace it.
How many are needed and where is it made?
The listed applications use one per vehicle, and the country of origin is Taiwan.
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