Baldwin RS4988 cross reference
Radial Seal Air Element
Parts listed as equivalent to the Baldwin RS4988. Checked 2026-11-11. Confirm thread size, gasket and length against your old part before installing, and follow your engine maker's spec.
What it fits
Caterpillar D9R Crawler Tractor
As published in Baldwin Product Guide (Form 562-25). Check your exact engine before buying.
Direct matches
- Caterpillar 165-1689
Listed together on: Baldwin Product Guide (Form 562-25)