Description
The Eaton Fuller 21025 is a 1st speed countershaft gear for manual transmissions. Also identified under part number HF21025, this gear carries a broad set of cross-references including 4300241, S-7886 or S7886, 21025-SP, EF63180HP, and ZBF21025, making it easier to confirm if this is the number your application calls for. The part dimensions are 5.75 in. length x 5.5 in. width x 2.75 in. height. Cross-references to aftermarket sources include SAS-21025, SAS-4300241, and FUL-21025. Sold by Pro Gear and Transmission as a genuine Eaton Fuller part. Not certain this is the right gear for your unit? Give us a call to confirm fitment before ordering.
Features
Eaton Fuller OEM part number 21025, also catalogued as HF21025
1st speed countershaft gear for manual transmission applications
Dimensions: 5.75 in. (L) x 5.5 in. (W) x 2.75 in. (H)
Cross-references: 4300241, S-7886, 21025-SP, EF63180HP, ZBF21025, SAS-21025, FUL-21025
Sold by Pro Gear and Transmission
Tech Specs
- Part Number: 21025
- Alternate / Cross-Reference Numbers: HF21025, 21025-SP, 4300241, S-7886, EF63180HP, ZBF21025, SAS-21025, FUL-21025
- Gear Position: 1st Speed
- Shaft: Countershaft
- Application: Manual Transmission
- Dimensions (L x W x H): 5.75 in. x 5.5 in. x 2.75 in.
Additional Information
Additional cross-reference numbers on record for part 21025: 19629, 27303-5118, 3088-21025, 35530229, 3892-P-5138, 591873C2, E2HZ7176A, SAS-4300241, FUL-4300241. If your parts book shows any of these numbers, this Eaton Fuller countershaft gear is the corresponding OEM replacement. Contact Pro Gear and Transmission to verify compatibility with your specific transmission model before ordering.Used in 77 Eaton Fuller models
| FO-16E309ALL-VMS | RT-8608L | RTF-8608L | RTLO-12713A |
| RTLO-12913A | RTLO-14713A | RTLO-14718B | RTLO-14913A |
| RTLO-14918B | RTLO-14918B-T2 | RTLO-16713A | RTLO-16713A-T2 |
| RTLO-16718B | RTLO-16913A | RTLO-16913A-T2 | RTLO-16918B |
| RTLO-16918B-T2 | RTLOC-16909A-T2 | RTLOF-12713A | RTLOF-12913A |
| RTLOF-14713A | RTLOF-14718B | RTLOF-14913A | RTLOF-14918B |
| RTLOF-14918B-T2 | RTLOF-16713A | RTLOF-16718B | RTLOF-16913A |
| RTLOF-16913A-T2 | RTLOF-16918B | RTLOF-16918B-T2 | RTLOFC-16909A-T2 |
| RTO-11109B-AT | RTO-11109B-ATE | RTO-11109B-ATR | RTO-11109B-ATS |
| RTO-11709MLL | RTO-11909ALL | RTO-11909MLL | RTO-12109B-AT |
| RTO-13109B-AT | RTO-13109B-ATE | RTO-14109B-AT | RTO-14109B-ATE |
| RTO-14109B-ATS | RTO-14709MLL | RTO-14909ALL | RTO-14909MLL |
| RTO-16909ALL | RTO-9109B-AT | RTOF-11709MLL | RTOF-11909ALL |
| RTOF-11909MLL | RTOF-14709MLL | RTOF-14909ALL | RTOF-14909MLL |
| RTOF-16909ALL | RTOO-11613 | RTX-11609B | RTX-11709B |
| RTX-11709H | RTX-12609B | RTX-12709B | RTX-12709H |
| RTX-13609B | RTX-13709H | RTX-14609B | RTX-14709B |
| RTX-14709H | RTXF-11609B | RTXF-11709H | RTXF-12609B |
| RTXF-12709H | RTXF-13609B | RTXF-13709H | RTXF-14609B |
| RTXF-14709H |









