The 1981 Alfa Romeo Spider has 35 electrical parts with verified fitment on this page — 9 part types and 15 brands, covering the 2.0L L4 engine. Each part includes a manufacturer part number and application notes.
On the 1981 Alfa Romeo Spider, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. Most of the listed parts are Alternator / Generator End Bearing (6 parts), Alternator / Generator (5 parts) and Battery (5 parts). The other 6 part types cover the remaining 19 parts.
The 1981 Alfa Romeo Spider came with a single engine, the 2.0L L4, and every part is verified against it.
15 brands supply electrical parts for the 1981 Alfa Romeo Spider, led by DEKA (9 parts), FVP (4 parts) and WELLS (3 parts), plus 12 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1981 Alfa Romeo Spider. 4 parts have it, including WJB / INMOTION PARTS RB6203Z (Alternator / Generator End Bearing) and DEKA 9A78DT (Battery). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | AL16X | 🇺🇸 US 🇨🇦 CA | RemanufacturedDoes Not Include Pulley | View on Amazon |
| FVP | 14395 | 🇺🇸 US 🇨🇦 CA | RemanufacturedDoes Not Include Pulley | View on Amazon |
| PURE ENERGY | 14395 | 🇺🇸 US 🇨🇦 CA | RemanufacturedDoes Not Include Pulley | View on Amazon |
| REMY | 14395 | 🇺🇸 US 🇨🇦 CA | Premium RemanufacturedDoes Not Include Pulley | View on Amazon |
| TERREPOWER | 14395 | 🇺🇸 US 🇨🇦 CA | RemanufacturedDoes Not Include Pulley | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
5 Alternator / Generator parts for the 1981 Alfa Romeo Spider come from 5 brands — BOSCH, FVP, PURE ENERGY and 2 other brands.
Part numbers include BOSCH AL16X and FVP 14395, among others listed above.
Alternator / Generator Brush Holder
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 5A1201 | 🇺🇸 US 🇨🇦 CA | with Bosch Alternator | View on Amazon |
This table covers the holders that carry the alternator brushes.
This group shows a single part: WELLS 5A1201.
Alternator / Generator End Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | RB6203Z | 🇺🇸 US 🇨🇦 CA | Outside Diameter: 1.575 In | View on Amazon |
| WJB / INMOTION PARTS | RB6201Z | 🇺🇸 US 🇨🇦 CA | with Bosch Alternatorwith 35, 45 Amps Alternator | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular | 203S | 🇺🇸 US 🇨🇦 CA | ONE Shield Stylewith Bosch Alternator | View on Amazon |
| BCA | NB203S | 🇺🇸 US 🇨🇦 CA | with 45, 55, 65 Amps AlternatorDrive End | View on Amazon |
| BCA | NB201S | 🇺🇸 US 🇨🇦 CA | with 35, 45 Amps AlternatorCommutator End | View on Amazon |
| SCHAEFFLER | 6203Z | 🇺🇸 US 🇨🇦 CA | Front12.000 mm Width | View on Amazon |
This table covers the bearings in the alternator housing. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
6 Alternator / Generator End Bearing parts are listed for the 1981 Alfa Romeo Spider, from WJB / INMOTION PARTS, BCA, NATIONAL and 1 other brand. WJB / INMOTION PARTS RB6203Z carries the "Popular" badge.
In the Economy grade, WJB / INMOTION PARTS supplies 2 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS RB6203Z.
The Standard Replacement section lists 4 options from BCA, NATIONAL and SCHAEFFLER — built to original-equipment specification. NATIONAL 203S is listed in this group.
Part numbers include WJB / INMOTION PARTS RB6203Z, WJB / INMOTION PARTS RB6201Z and NATIONAL 203S, among others listed above.
Battery
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular | 9A78DT | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| DEKA | 9A34 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| EXIDE | MX24 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 24 | View on Amazon |
| FVP | P24AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 24 | View on Amazon |
| FVP | P24RAGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 24 | View on Amazon |
This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery.
5 Battery parts are listed for the 1981 Alfa Romeo Spider, from DEKA, FVP and EXIDE. DEKA 9A78DT carries the "Popular" badge.
Listed part numbers: DEKA 9A78DT, DEKA 9A34 and EXIDE MX24, plus the other parts above.
Battery Cable
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular | 00802 | 🇺🇸 US 🇨🇦 CA | Black4 Gauge | View on Amazon |
| DEKA | 00286 | 🇺🇸 US 🇨🇦 CA | Red4 Gauge | View on Amazon |
| DEKA | 00297 | 🇺🇸 US 🇨🇦 CA | Red4 Gauge | View on Amazon |
| DEKA | 00801 | 🇺🇸 US 🇨🇦 CA | Black4 Gauge | View on Amazon |
| DEKA | 00296 | 🇺🇸 US 🇨🇦 CA | Red4 Gauge | View on Amazon |
This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early.
5 Battery Cable parts for the 1981 Alfa Romeo Spider come from DEKA. The "Popular" part is DEKA 00802.
This group includes DEKA 00802, DEKA 00286 and DEKA 00297 and the remaining parts above.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA | 00350 | 🇺🇸 US 🇨🇦 CA | Top Post Terminal | View on Amazon |
| DEKA | 01056 | 🇺🇸 US 🇨🇦 CA | Top Post Terminal Lead Free | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
DEKA supplies both parts for the 1981 Alfa Romeo Spider.
Part numbers include DEKA 00350 and DEKA 01056.
Flasher
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | 550 | 🇺🇸 US 🇨🇦 CA | Thermal FlasherThermal, 12v, 3 terminal, 12.8amp, 2-6 bulbs | View on Amazon |
| FAMOUS BRAND | FCA1028 | 🇺🇸 US 🇨🇦 CA | Flasher Directional | View on Amazon |
| STANDARD MOTOR PRODUCTS | EFL2 | 🇺🇸 US 🇨🇦 CA | Turn Signal | View on Amazon |
| WELLS | 1R2195 | 🇺🇸 US 🇨🇦 CA | Turn Signal | View on Amazon |
This table covers the flasher units that blink the turn signals and hazards.
4 Flasher parts are listed for the 1981 Alfa Romeo Spider, from BUSSMANN, FAMOUS BRAND, STANDARD MOTOR PRODUCTS and 1 other brand.
This group includes BUSSMANN 550, FAMOUS BRAND FCA1028 and STANDARD MOTOR PRODUCTS EFL2 and the remaining parts above.
Starter Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | 16531 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY | 16531 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 16531 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 16531 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
4 Starter Motor parts for the 1981 Alfa Romeo Spider come from 4 brands — FVP, PURE ENERGY, REMY and 1 other brand.
Part numbers include FVP 16531, among others listed above.
Voltage Regulator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 1197311090 | 🇺🇸 US 🇨🇦 CA | VOLT REG | View on Amazon |
| STANDARD MOTOR PRODUCTS | VR471 | 🇺🇸 US 🇨🇦 CA | Direct OE ReplacementNumber of Volts: 14 | View on Amazon |
| WELLS | 1V1025 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the regulators that control alternator output voltage.
3 Voltage Regulator parts are listed for the 1981 Alfa Romeo Spider, from BOSCH, STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: BOSCH 1197311090, STANDARD MOTOR PRODUCTS VR471 and WELLS 1V1025.
Buying Electrical Parts for a 1981 Alfa Romeo Spider
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Confirm you have the 2.0L 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, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Alternator / Generator End Bearing and Alternator / Generator .
Frequently Asked Questions
How many electrical parts fit the 1981 Alfa Romeo Spider?
Our catalog currently lists 35 electrical parts for the 1981 Alfa Romeo Spider across 9 subcategories and 15 brands, covering the 2.0L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 1981 Alfa Romeo Spider?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. 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, clean or renew the battery terminals and grounds with any charging-system repair.
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 1981 Alfa Romeo Spider 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 1981 Alfa Romeo Spider?
Every part on this page is matched to the 2.0L L4 engine. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1981 Alfa Romeo Spider
Electrical Parts for Other Alfa Romeo Spider Years
Switch vehicle or jump to a subcategory
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.