49 Electrical switch & relay parts are listed for the 1981 Saab 900, in 15 part types, covering the 2.0L L4 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The switch and relay system on the 1981 Saab 900 covers the switches, relays and flashers that route power to everything the driver touches. The largest groups are Radiator Fan Relay (10 parts), Horn Relay (8 parts) and Ignition Relay (7 parts). The other 12 part types cover the remaining 24 parts.
The 1981 Saab 900 came with a single engine, the 2.0L L4, and every part is verified against it.
11 brands supply electrical switch & relay parts for the 1981 Saab 900, led by ÜRO PARTS (13 parts), STANDARD MOTOR PRODUCTS (12 parts) and WELLS (6 parts), plus 8 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 Saab 900. 8 parts have it, including DORMAN 84601 (Horn Relay) and DORMAN 84601 (Ignition Relay). Each part number opens a page with every vehicle that part fits.
A/C Compressor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 8533176 | 🇺🇸 US 🇨🇦 CA | Clutch Relay | View on Amazon |
This table covers the relays that control the A/C Compressor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 1981 Saab 900 — ÜRO PARTS 8533176.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT | BS4521 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HELLA | 004846001 | 🇺🇸 US 🇨🇦 CA | 2-Pin ConnectorBolted | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Brake Light Switch parts are listed for the 1981 Saab 900, from CALORSTAT and HELLA.
This group includes CALORSTAT BS4521 and HELLA 004846001.
Defroster Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 8522310 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1R1616 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Defroster circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Defroster Relay parts are listed for the 1981 Saab 900, from ÜRO PARTS and WELLS.
Part numbers include ÜRO PARTS 8522310 and WELLS 1R1616.
Fog / Driving Lamp Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 8522310 | 🇺🇸 US 🇨🇦 CA | 5 spade relay | View on Amazon |
| ÜRO PARTS | 8533176 | 🇺🇸 US 🇨🇦 CA | Verify Part Number on Old Part Before Ordering | View on Amazon |
This table covers the relays that control the Fog / Driving Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
ÜRO PARTS supplies both parts for the 1981 Saab 900.
Part numbers include ÜRO PARTS 8522310 and ÜRO PARTS 8533176.
Fuel Injection Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 8533176 | 🇺🇸 US 🇨🇦 CA | Verify Part Number on Old Part Before Ordering | View on Amazon |
This table covers the relays that control the Fuel Injection circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: ÜRO PARTS 8533176.
Fuel Pump / Circuit Opening Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 8522310 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Fuel Pump / Circuit Opening circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 1981 Saab 900 — ÜRO PARTS 8522310.
Headlamp Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 8533176 | 🇺🇸 US 🇨🇦 CA | Verify Part Number on Old Part Before Ordering | View on Amazon |
This table covers the relays that control the Headlamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 1981 Saab 900 — ÜRO PARTS 8533176.
Horn Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 84601 | 🇺🇸 US 🇨🇦 CA | Relays - Universal4 Pin 30 Amp 12 Volt | View on Amazon |
| ÜRO PARTS Popular | 8522310 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA | 600027 | 🇺🇸 US 🇨🇦 CA | Voltage: 12 Volts (Direct Current) | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY265T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY265 | 🇺🇸 US 🇨🇦 CA | Connector Shape: SquareFunctions: Relay | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY273 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS | RLY17 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1R1616 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Horn circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
8 Horn Relay parts for the 1981 Saab 900 come from 6 brands — STANDARD MOTOR PRODUCTS, DORMAN, ÜRO PARTS and 3 other brands. The "Popular" part is DORMAN 84601.
Listed part numbers: DORMAN 84601, ÜRO PARTS 8522310 and ROSTRA 600027, plus the other parts above.
Ignition Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 84601 | 🇺🇸 US 🇨🇦 CA | Relays - Universal4 Pin 30 Amp 12 Volt | View on Amazon |
| ÜRO PARTS Popular | 8533176 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA | 600027 | 🇺🇸 US 🇨🇦 CA | Voltage: 12 Volts (Direct Current) | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY265T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY265 | 🇺🇸 US 🇨🇦 CA | Connector Shape: SquareFunctions: Relay | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY273 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1R1616 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Ignition circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
7 Ignition Relay parts for the 1981 Saab 900 come from 5 brands — STANDARD MOTOR PRODUCTS, DORMAN, ÜRO PARTS and 2 other brands. The "Popular" part is DORMAN 84601.
Part numbers include DORMAN 84601, ÜRO PARTS 8533176 and ROSTRA 600027, among others listed above.
Oil Pressure Sender / Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 2011315 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| CALORSTAT | OS3513 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA | 501514 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| STANDARD MOTOR PRODUCTS | PS170 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
4 Oil Pressure Sender / Switch parts are listed for the 1981 Saab 900, from BECK/ARNLEY, CALORSTAT, ROSTRA and 1 other brand.
Part numbers include BECK/ARNLEY 2011315, CALORSTAT OS3513 and ROSTRA 501514, among others listed above.
Radiator Fan Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS Popular | 8522310 | 🇺🇸 US 🇨🇦 CA | 5 spade relay | View on Amazon |
| ÜRO PARTS Popular | 8533176 | 🇺🇸 US 🇨🇦 CA | This relay is For different systems In different vehicles, be sure To confirm application In your specific vehicle prior To purchase. | View on Amazon |
| DORMAN | 84601 | 🇺🇸 US 🇨🇦 CA | Relays - Universal4 Pin 30 Amp 12 Volt | View on Amazon |
| ROSTRA | 600027 | 🇺🇸 US 🇨🇦 CA | Voltage: 12 Volts (Direct Current) | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY265T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY265 | 🇺🇸 US 🇨🇦 CA | Connector Shape: SquareFunctions: Relay | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY273 | 🇺🇸 US 🇨🇦 CA | Motor Relay | View on Amazon |
| UNITED MOTOR PRODUCTS | RLY16 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1R1616 | 🇺🇸 US 🇨🇦 CA | Right Fanwith Air Conditioning | View on Amazon |
| WELLS | 1R1621 | 🇺🇸 US 🇨🇦 CA | Left Fanwith Air Conditioning | View on Amazon |
This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
10 Radiator Fan Relay parts for the 1981 Saab 900 come from 6 brands — STANDARD MOTOR PRODUCTS, ÜRO PARTS, WELLS and 3 other brands. The "Popular" part is ÜRO PARTS 8522310.
Radiator Fan Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular | SKTS151 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | TS151 | 🇺🇸 US 🇨🇦 CA | Terminal Type: Blade | View on Amazon |
| BECK/ARNLEY | 2011545 | 🇺🇸 US 🇨🇦 CA | 2 Prong Switch 82C Degrees, Warmer Climates | View on Amazon |
| BECK/ARNLEY | 2010809 | 🇺🇸 US 🇨🇦 CA | 2 Prong Switch 92C Degrees, Standard Climates | View on Amazon |
| FACET | 75005 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1S4391 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT | TS6994 | 🇺🇸 US 🇨🇦 CA | Combi Switch Function: Normally OpenConnector Shape: Rounded | View on Amazon |
This table covers the Radiator Fan switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
7 Radiator Fan Switch parts are listed for the 1981 Saab 900, from BECK/ARNLEY, SKP, STANDARD MOTOR PRODUCTS and 3 other brands. SKP SKTS151 carries the "Popular" badge.
In the Economy grade, SKP supplies 1 part: the catalog's value-priced group. A representative part number is SKP SKTS151.
The Standard Replacement section lists 5 options from BECK/ARNLEY, STANDARD MOTOR PRODUCTS, FACET and 1 other brand — built to original-equipment specification. STANDARD MOTOR PRODUCTS TS151 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: SKP SKTS151, STANDARD MOTOR PRODUCTS TS151 and BECK/ARNLEY 2011545, plus the other parts above.
Rear Window Wiper Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | RY203 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Rear Window Wiper circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: STANDARD MOTOR PRODUCTS RY203.
Starter Motor Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 8533176 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Starter Motor Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: ÜRO PARTS 8533176.
Wiper Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS | 8533176 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Wiper Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 1981 Saab 900 — ÜRO PARTS 8533176.
Buying Electrical Switch & Relay Parts for a 1981 Saab 900
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- 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, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Radiator Fan Relay and Horn Relay .
Frequently Asked Questions
How many electrical switch & relay parts fit the 1981 Saab 900?
Our catalog currently lists 49 electrical switch & relay parts for the 1981 Saab 900 across 15 subcategories and 11 brands, covering the 2.0L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 1981 Saab 900?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. 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, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
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 Saab 900 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 Saab 900?
Every part on this page is matched to the 2.0L L4 engine. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1981 Saab 900
Electrical Switch & Relay Parts for Other Saab 900 Years
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