This page lists 22 electrical switch & relay parts for the 2021 Ford F59, across 10 part types, covering the 7.3L V8 engine. Every part shows its brand, manufacturer part number and fitment notes.
The switch and relay system on the 2021 Ford F59 covers the switches, relays and flashers that route power to everything the driver touches. The largest groups are A/C Refrigerant Pressure Switch (4 parts), Oil Pressure Sender / Switch (4 parts) and Cruise Control Switch (3 parts). The other 7 part types cover the remaining 11 parts.
Every part on this page is matched to the 7.3L V8 — the only engine offered in the 2021 Ford F59.
The most listed brands for 2021 Ford F59 electrical switch & relay parts are MOTORCRAFT (14 parts), UAC (2 parts) and STANDARD MOTOR PRODUCTS (2 parts), plus 4 more brands. Quality grades include Economy and Standard Replacement.
Each part number listed for the 2021 Ford F59 opens a page with every vehicle that part fits.
A/C Clutch Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC | SW0561R134AC | 🇺🇸 US 🇨🇦 CA | Clutch Cycling Switch | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | YH2011 | 🇺🇸 US 🇨🇦 CA | At Accumulator | View on Amazon |
This table covers the A/C Clutch 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.
2 A/C Clutch Switch parts are listed for the 2021 Ford F59, from UAC and MOTORCRAFT.
In the Economy grade, UAC supplies 1 part: the catalog's value-priced group. A representative part number is UAC SW0561R134AC.
The Standard Replacement section lists 1 option from MOTORCRAFT — built to original-equipment specification. MOTORCRAFT YH2011 is listed in this group.
Part numbers include UAC SW0561R134AC and MOTORCRAFT YH2011.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS | 37340 | 🇺🇸 US 🇨🇦 CA | Pressure Switch | View on Amazon |
| GPD | 1711937 | 🇺🇸 US 🇨🇦 CA | Transducer | View on Amazon |
| MOTORCRAFT | YH2034 | 🇺🇸 US 🇨🇦 CA | Pressure Cut Off SwitchM10 X 1.25 - 6H Thread | View on Amazon |
| UAC | SW11280C | 🇺🇸 US 🇨🇦 CA | Binary HPCO/Cooling Fan Pressure Switch | View on Amazon |
This table covers the pressure switches on the A/C circuit. 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.
4 A/C Refrigerant Pressure Switch parts for the 2021 Ford F59 come from 4 brands — FOUR SEASONS, GPD, MOTORCRAFT and 1 other brand.
Part numbers include FOUR SEASONS 37340, GPD 1711937 and MOTORCRAFT YH2034, among others listed above.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | SW7810 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1S10920 | 🇺🇸 US 🇨🇦 CA | Mounting Hardware Included: No | 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 for the 2021 Ford F59 come from 2 brands — MOTORCRAFT and WELLS.
Listed part numbers: MOTORCRAFT SW7810 and WELLS 1S10920.
Cruise Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | SW7449 | 🇺🇸 US 🇨🇦 CA | LeftColor: Black | View on Amazon |
| MOTORCRAFT | SW7450 | 🇺🇸 US 🇨🇦 CA | Leftwith Adaptive Speed Control | View on Amazon |
| MOTORCRAFT | SW8488 | 🇺🇸 US 🇨🇦 CA | without Speed Control | View on Amazon |
This table covers the Cruise Control 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.
MOTORCRAFT supplies the 3 Cruise Control Switch parts for the 2021 Ford F59.
Listed part numbers: MOTORCRAFT SW7449, MOTORCRAFT SW7450 and MOTORCRAFT SW8488.
Hazard Warning Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | SW7413 | 🇺🇸 US 🇨🇦 CA | without Collision Mitigation System | View on Amazon |
This table covers the Hazard Warning 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.
One part is listed for the 2021 Ford F59 — MOTORCRAFT SW7413.
Headlamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | SW8618 | 🇺🇸 US 🇨🇦 CA | without Front Fog Lamps | View on Amazon |
This table covers the column or dash switches that control the exterior 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.
One part is listed for the 2021 Ford F59 — MOTORCRAFT SW8618.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | SW9352 | 🇺🇸 US 🇨🇦 CA | Steering ColumnActuator Assy, Plastic | View on Amazon |
| MOTORCRAFT | SW9353 | 🇺🇸 US 🇨🇦 CA | Actuator Assembly | View on Amazon |
| MOTORCRAFT | SW6573 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the ignition switches that feed the starter circuit. 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.
MOTORCRAFT supplies the 3 Ignition Starter Switch parts for the 2021 Ford F59.
This group includes MOTORCRAFT SW9352, MOTORCRAFT SW9353 and MOTORCRAFT SW6573.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | PS427T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| ULTRA-POWER | PS427 | 🇺🇸 US 🇨🇦 CA | Fits Oil Pressure Sender or Switchwith Lightor Oil Pressure Sender or Switch | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | OPS1 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS | PS427 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Oval, Rectangle | 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 for the 2021 Ford F59 come from 3 brands — STANDARD MOTOR PRODUCTS, ULTRA-POWER and MOTORCRAFT.
The Economy section: 2 options from STANDARD MOTOR PRODUCTS and ULTRA-POWER. STANDARD MOTOR PRODUCTS PS427T is listed in this group.
Standard Replacement: 2 parts, from MOTORCRAFT and STANDARD MOTOR PRODUCTS. A representative part number is MOTORCRAFT OPS1.
This group includes STANDARD MOTOR PRODUCTS PS427T, ULTRA-POWER PS427 and MOTORCRAFT OPS1 and the remaining parts above.
Transmission-Automatic Fluid Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | SW6215 | 🇺🇸 US 🇨🇦 CA | No Conductor In Switch5R110 Transmission Code | View on Amazon |
This table covers the Transmission-Automatic Fluid Pressure 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.
This group shows a single part: MOTORCRAFT SW6215.
Turn Signal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT | SW7917 | 🇺🇸 US 🇨🇦 CA | with Electronic Stability Control | View on Amazon |
This table covers the combination / turn-signal 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.
This group shows a single part: MOTORCRAFT SW7917.
Buying Electrical Switch & Relay Parts for a 2021 Ford F59
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 7.3L V8 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: A/C Refrigerant Pressure Switch and Oil Pressure Sender / Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2021 Ford F59?
Our catalog currently lists 22 electrical switch & relay parts for the 2021 Ford F59 across 10 subcategories and 7 brands, covering the 7.3L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 2021 Ford F59?
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 2021 Ford F59 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 2021 Ford F59?
Every part on this page is matched to the 7.3L V8 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 2021 Ford F59
Electrical Switch & Relay Parts for Other Ford F59 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.