The 1978 Fiat X-1/9 has 5 drivetrain parts with verified fitment on this page — 1 part type and 2 brands, covering the 1.3L L4 engine. Each part includes a manufacturer part number and application notes.
On the 1978 Fiat X-1/9, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. Every listed part is a CV Joint Boot.
Every part on this page is matched to the 1.3L L4 — the only engine offered in the 1978 Fiat X-1/9.
The most listed brands for 1978 Fiat X-1/9 drivetrain parts are DORMAN (4 parts) and MEVOTECH (1 part).
1 part on this 1978 Fiat X-1/9 page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — DORMAN 03680 (CV Joint Boot). Click any part number to see every vehicle that part fits.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 03680 | 🇺🇸 US 🇨🇦 CA | OuterJoint Diameter 3.83" | View on Amazon |
| DORMAN | 614001 | 🇺🇸 US 🇨🇦 CA | Joint Diameter 3.58"Shaft End Inside Diameter .93" | View on Amazon |
| DORMAN | 614002 | 🇺🇸 US 🇨🇦 CA | Joint Diameter 3.3"Shaft End Inside Diameter 0.87" | View on Amazon |
| DORMAN | 614701 | 🇺🇸 US 🇨🇦 CA | OuterQuick-Boot | View on Amazon |
| MEVOTECH | DX541 | 🇺🇸 US 🇨🇦 CA | Rear Inner | View on Amazon |
This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn.
5 CV Joint Boot parts for the 1978 Fiat X-1/9 come from 2 brands — DORMAN and MEVOTECH. The "Popular" part is DORMAN 03680.
Part numbers include DORMAN 03680, DORMAN 614001 and DORMAN 614002, among others listed above.
Buying Drivetrain Parts for a 1978 Fiat X-1/9
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 1.3L 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: CV Joint Boot .
Frequently Asked Questions
How many drivetrain parts fit the 1978 Fiat X-1/9?
Our catalog currently lists 5 drivetrain parts for the 1978 Fiat X-1/9 across 1 subcategory and 2 brands, covering the 1.3L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 1978 Fiat X-1/9?
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 X-1/9 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 X-1/9?
Every part on this page is matched to the 1.3L 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 X-1/9
Drivetrain Parts for Other Fiat X-1/9 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.