Front Left Seat Belt Retractor / used
Seller: Marketplace seller
$51
Asking
Quick reference
Identify
- Service part
- Pending
- Block casting
- Pending
- VIN digit 8
- Pending
Years
- Application
- 2015-2017 models
- Application
- 2015-2023 S550 coupes
- Application
- 2018-2023 GT Premium models equipped with automatic seat belt presenters require specific wiring harness connectors and presenter mechanisms
Power
- Engine
- 5L V8 Naturally Aspirated Coyote V8 (435hp)
- Codes
- Pending
- Inventory
- $51 asking
What to know before swapping
2018 model year straddles pre-facelift and post-facelift production; early 2018 VINs may use FR3Z prefix numbers
Convertible vs Coupe mounting bracket geometry differs at B-pillar lower anchor point
Recaro seat package may utilize different retractor housing angles; verify guide loop compatibility
Context
Read the full notes
OpenClose
Context
Read the full notes
The 2018 Ford Mustang S550 platform utilizes the JR3Z-78611B09-AA front left seat belt retractor assembly, which superseded earlier FR3Z-78611B09-AA designs from pre-facelift 2015-2017 models. When sourcing from salvage yards, interchange broadly spans 2015-2023 S550 coupes, though 2018-2023 GT Premium models equipped with automatic seat belt presenters require specific wiring harness connectors and presenter mechanisms. Inspection must verify pyrotechnic pretensioner deployment status—never install deployed units—and examine webbing for UV degradation, fraying, or contamination. Installation requires 31 ft-lbs torque on the B-pillar lower anchor bolt and careful alignment through the upper guide loop. Common failures include weakened retractor springs causing slow retraction, locked mechanisms from sudden stops, and presenter motor failures on Premium trims. Always disconnect the battery and wait 10 minutes before service to avoid accidental pretensioner deployment. Note that convertible variants utilize different mounting bracket geometries due to quarter window and top mechanism clearance.
OEM numbers
No OEM numbers yet. Add one.
Confirmed fitment
Applications
| Year | Make | Model | Engine | Confidence |
|---|---|---|---|---|
| 2018 | Ford | Mustang | 5L V8 Naturally Aspirated Coyote V8 (435hp) | 80% |
Available parts
Live listings
View listing
Contribute
See something missing? Add it.
The wiki gets better with every install.
Sign in to contribute