This page lists 11 drivetrain parts for the 1978 Fiat 131, across 4 part types, covering the 1.8L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
The drivetrain system on the 1978 Fiat 131 moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are Universal Joint (6 parts), Differential Pinion Bearing / Race (2 parts) and Differential Pinion Repair Sleeve (2 parts). The other 1 part type covers the remaining 1 part.
The 1978 Fiat 131 came with a single engine, the 1.8L L4, and every part is verified against it.
5 brands supply drivetrain parts for the 1978 Fiat 131, led by SKF (5 parts), DANA (2 parts) and GMB (2 parts), plus 2 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1978 Fiat 131. 2 parts have it, including GMB 2200500 (Universal Joint) and MOOG 341 (Universal Joint). Each part number opens a page with every vehicle that part fits.
Differential Pinion Bearing / Race
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF | HM89410VP | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF | HM89443 | 🇺🇸 US 🇨🇦 CA | with 1.3130 In. Bearing Inside Diameter | View on Amazon |
This table covers the bearings and races on the differential pinion.
2 Differential Pinion Bearing / Race parts for the 1978 Fiat 131 come from SKF.
This group includes SKF HM89410VP and SKF HM89443.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER | SR3475 | 🇺🇸 US 🇨🇦 CA | Rear16.99 mm Width | View on Amazon |
| SKF | 99146 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
2 Differential Pinion Repair Sleeve parts are listed for the 1978 Fiat 131, from SCHAEFFLER and SKF.
Listed part numbers: SCHAEFFLER SR3475 and SKF 99146.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF | 14065 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the seals at the differential pinion yoke. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
One part is listed for the 1978 Fiat 131 — SKF 14065.
Universal Joint
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA | 25101X | 🇺🇸 US 🇨🇦 CA | Spicer SelectNon-Greasable | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GMB Popular | 2200500 | 🇺🇸 US 🇨🇦 CA | GreasableGrease Fitting in Cross | View on Amazon |
| MOOG Popular | 341 | 🇺🇸 US 🇨🇦 CA | Fits Rear Driveshaft at Rear AxleExcept Short Grease Fitting | View on Amazon |
| DANA | 5101X | 🇺🇸 US 🇨🇦 CA | SpicerNon-Greasable | View on Amazon |
| GMB | 2200600 | 🇺🇸 US 🇨🇦 CA | GreasableGrease Fitting in Bearing Cap | View on Amazon |
| SKF | UJ341 | 🇺🇸 US 🇨🇦 CA | Greaseable | View on Amazon |
This table covers the U-joints in the driveshaft.
6 Universal Joint parts are listed for the 1978 Fiat 131, from DANA, GMB, MOOG and 1 other brand. GMB 2200500 carries the "Popular" badge.
In the Economy grade, DANA supplies 1 part: the catalog's value-priced group. A representative part number is DANA 25101X.
The Standard Replacement section lists 5 options from GMB, MOOG, DANA and 1 other brand — built to original-equipment specification. GMB 2200500 is listed in this group.
Part numbers include GMB 2200500, DANA 25101X and MOOG 341, among others listed above.
Buying Drivetrain Parts for a 1978 Fiat 131
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Confirm you have the 1.8L L4 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Universal Joint and Differential Pinion Bearing / Race .
Frequently Asked Questions
How many drivetrain parts fit the 1978 Fiat 131?
Our catalog currently lists 11 drivetrain parts for the 1978 Fiat 131 across 4 subcategories and 5 brands, covering the 1.8L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 1978 Fiat 131?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1978 Fiat 131 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 1978 Fiat 131?
Every part on this page is matched to the 1.8L L4 engine. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1978 Fiat 131
Drivetrain Parts for Other Fiat 131 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.