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Moog 397 Universal Joint - At Center Bearing, At Rear Axle or At Transmission
| Brand | Moog 397 |
|---|---|
| Position | At Rear Axle |
| Bearing Cap Axis 1 Diameter | 0.985 |
| Bearing Cap Axis 1 Diameter | 25.0 |
| Bearing Cap Axis 2 Diameter | 0.985 |
| Bearing Cap Axis 2 Diameter | 25.0 |
| Bearing Cap Type | 4 Grooved Round Bearings |
| Bearing Diameter A - Inch | 0.985 |
| Bearing Diameter A - mm | 25.0 |
| Bearing Diameter B - Inch | 0.985 |
| Bearing Diameter B - mm | 25.0 |
| Bearing Type A | Round Grooved |
| Bearing Type B | Round Grooved |
| Greaseable | YES |
| Image | UJoint_4Grooved.tif |
| Length A - Inch | 1.717 |
| Length A - mm | 43.6 |
| Length Axis 1 | 1.717 |
| Length Axis 1 | 43.6 |
| Length Axis 2 | 1.717 |
| Length Axis 2 | 43.6 |
| Length B - Inch | 1.717 |
| Length B - mm | 43.6 |
| Length Measurement A | Outside of Groove to Outside of Groove |
| Length Measurement B | Inside of Groove to Inside of Groove plus thickness of 2 Lock Rings |
| Lube Fitting Location | Regular Lube Fitting in Bearing |
| Lubricateable | YES |
| OE Series | Mazda |
| U-Joint Identification | 4 Grooved Round Bearings |
| Fits | Mazda · 22 vehicles |
MOOG Premium. Backed by rigorous testing for reliable performance you can count on.
Fast installation. Problem-solving innovations help make installation hassle-free.
Greaseable design. Regular lube fitting in the bearing supports easy maintenance.
Cross-references BBB Industries 11606, Four Seasons 20221 and Global Parts Distributors LLC 1504 for the same application. See all 12.
MOOG 397 Universal Joint for Mazda Driveline Service
MOOG 397 is a greaseable universal joint built for driveline repair on select Mazda applications. It uses 4 grooved round bearings and OE-series Mazda dimensions to support smooth driveline articulation in transmission, rear axle, and center bearing locations.
Key Features
- Part number: 397
- Universal joint for driveline and axle service
- 4 grooved round bearings
- Greaseable design with regular lube fitting in the bearing
- Bearing cap diameter: 0.985 in. / 25.0 mm
- Length A and Length B: 1.717 in. / 43.6 mm
- OE series: Mazda
- Cross-reference: Four Seasons 20221
Detailed Description
MOOG 397 is a premium universal joint engineered with grooved round bearing caps and a greaseable layout for serviceability during driveline maintenance. The 0.985-inch bearing cap diameter and 1.717-inch length dimensions on both axes match the listed OE-style Mazda series requirements, making this part a direct service option for driveline repair on Mazda RX-7 and Mazda 626 applications. MOOG uses material selection and testing practices aimed at consistent fit and dependable operation in demanding driveline positions.
This part cross-references Four Seasons 20221 for the same application. It is a practical choice when replacing a worn universal joint on 1979-1983 Mazda RX-7 or 1979-1982 Mazda 626 driveline assemblies.
What It Helps Fix
- Driveline vibration from worn U-joint bearings
- Clunking or driveline lash during acceleration and deceleration
- Binding or rough movement at the driveshaft connection
- Grease loss or dry bearing operation in serviceable joints
- Wear-related noise at transmission, rear axle, or center bearing positions
Installation Notes and Tips
Compatible With 1979-1983 Mazda RX-7 at transmission and rear axle positions, and 1979-1982 Mazda 626 at transmission, rear axle, and center bearing positions. Verify bearing cap diameter, overall length, and groove style before installation. Clean the yoke bores thoroughly, align the grooved round bearings carefully, and lubricate through the bearing fitting after assembly. Confirm driveline phasing and inspect related components for wear before returning the vehicle to service.
Quality Assurance
MOOG backs this universal joint with superior materials and rigorous testing to support reliable driveline performance. The brand’s problem-solving design approach focuses on straightforward installation and consistent service fit for Mazda driveline applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1983 | Mazda | RX-7 | At Transmission | Fits various makes and models of vehicles. |
| 1983 | Mazda | RX-7 | At Rear Axle | Fits various makes and models of vehicles. |
| 1982 | Mazda | 626 | At Transmission | Fits various makes and models of vehicles. |
| 1982 | Mazda | 626 | At Rear Axle | Fits various makes and models of vehicles. |
| 1982 | Mazda | 626 | At Center Bearing | Fits various makes and models of vehicles. |
| 1982 | Mazda | RX-7 | At Transmission | Fits various makes and models of vehicles. |
| 1982 | Mazda | RX-7 | At Rear Axle | Fits various makes and models of vehicles. |
| 1981 | Mazda | 626 | At Transmission | Fits various makes and models of vehicles. |
| 1981 | Mazda | 626 | At Rear Axle | Fits various makes and models of vehicles. |
| 1981 | Mazda | 626 | At Center Bearing | Fits various makes and models of vehicles. |
| 1981 | Mazda | RX-7 | At Transmission | Fits various makes and models of vehicles. |
| 1981 | Mazda | RX-7 | At Rear Axle | Fits various makes and models of vehicles. |
| 1980 | Mazda | 626 | At Transmission | Fits various makes and models of vehicles. |
| 1980 | Mazda | 626 | At Rear Axle | Fits various makes and models of vehicles. |
| 1980 | Mazda | 626 | At Center Bearing | Fits various makes and models of vehicles. |
| 1980 | Mazda | RX-7 | At Transmission | Fits various makes and models of vehicles. |
| 1980 | Mazda | RX-7 | At Rear Axle | Fits various makes and models of vehicles. |
| 1979 | Mazda | 626 | At Transmission | Fits various makes and models of vehicles. |
| 1979 | Mazda | 626 | At Rear Axle | Fits various makes and models of vehicles. |
| 1979 | Mazda | 626 | At Center Bearing | Fits various makes and models of vehicles. |
| 1979 | Mazda | RX-7 | At Transmission | Fits various makes and models of vehicles. |
| 1979 | Mazda | RX-7 | At Rear Axle | Fits various makes and models of vehicles. |
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