Description
The National 370003A is a Type-11 oil-bath drive axle wheel seal for 38,000-46,000 lb tandem-drive axles, replacing Stemco 393-0173, SKF/CR 47697, and Meritor MER0173. It fits Eaton, Meritor, and equivalent OEM hubs used across Freightliner, Kenworth, Peterbilt, Western Star, Navistar, and Volvo/Mack tractors.
Specifications
| Manufacturer | National (Federal-Mogul) |
|---|---|
| Part Number | 370003A |
| Part Type | Drive axle wheel seal |
| Seal Type | Type 11 (oil-bath) |
| Axle Rating | 38,000 lb – 46,000 lb tandem |
| Outer Diameter | 6.325 in (160.5 mm) |
| Shaft / Bore Diameter | 4.766 in (121.0 mm) |
| Width | 1.078 in |
Cross References
This part replaces or is equivalent to the following part numbers:
- National (Federal-Mogul): 370003A, 380003A
- Stemco: 393-0173, 392-9131, 309-0973
- SKF / CR (Chicago Rawhide): 47691, 47692, 47693, 47696, 47697, 47698, 49050, 50640
- Meritor: MER0173, MER0273
- ConMet: 107552, 10005431
- Power Products: P370003
- Rev HD: R1-D02, RM-D02
- Boss Seals: B370003, B47695, B47697
- Mack: 32QJ127A
- Freightliner: 681-997-0546
- GM / Volvo: 2317614, 15550869, 15557677, 15679880, 15982869
- Ford: D5HZ-1175-A, D7HZ-1175-D, E1HZ-1175-B, E2HZ-1175-A, F2HZ-1175-C
Applications
Fits drive axle hubs rated 38,000-46,000 lb on Class 7-8 trucks and tractors. Representative platforms:
- Freightliner Cascadia, Coronado, Columbia, FLD, Century, Business Class M2 with Eaton/Meritor drive axles
- Kenworth T680, T880, W900, T800, T660 with matching drive axles
- Peterbilt 379, 386, 389, 567, 579 with matching drive axles
- Western Star 4900, 5700, 49X with Eaton/Meritor drive axles
- International / Navistar 9200/9400/ProStar/LT with applicable drive axles
- Volvo VNL, VNR, VHD; Mack Anthem, Pinnacle, Granite with matching drive axles
Confirm axle make and rating before ordering — 380003A is the larger 50,000 lb-axle variant; using the wrong seal will leak.
