Convertible · 5.0L High-Output EFI V8
1991 Ford Mustang LX 5.0L Convertible 4AT
Ford's 1991 brochure pairs the LX 5.0L convertible with the 5.0L High-Output EFI V8 and 4-speed automatic overdrive.
Photo: TJKula / Wikimedia Commons, licensed under CC BY 4.0. Cropped to 16:9.
Factory configuration
What this model is
- Trim
- LX 5.0L
- Body style
- Convertible
- Engine
- 5.0L High-Output EFI V8
- Transmission
- 4-speed automatic overdrive
United States factory configuration. Appearance and value packages are not separate configurations.
Compare related 1991 configurations
Compare up to twelve documented pairings, prioritizing the same engine, body, trim and gearbox as this car. This related selection is not a complete factory lineup.
Browse all documented 1991 configurations →
Compare 12 related configurations — current car marked
| Configuration | Engine | Transmission | Body |
|---|---|---|---|
| Current carLX 5.0L Convertible 4AT | 5.0L High-Output EFI V8 | 4-speed automatic overdrive | Convertible |
| LX 5.0L Convertible 5MT | 5.0L High-Output EFI V8 | 5-speed manual overdrive | Convertible |
| GT Convertible 4AT | 5.0L High-Output EFI V8 | 4-speed automatic overdrive | Convertible |
| GT Convertible 5MT | 5.0L High-Output EFI V8 | 5-speed manual overdrive | Convertible |
| LX 5.0L Two-door sedan 4AT | 5.0L High-Output EFI V8 | 4-speed automatic overdrive | Two-door sedan |
| LX 5.0L Three-door hatchback 4AT | 5.0L High-Output EFI V8 | 4-speed automatic overdrive | Three-door hatchback |
| LX 5.0L Two-door sedan 5MT | 5.0L High-Output EFI V8 | 5-speed manual overdrive | Two-door sedan |
| LX 5.0L Three-door hatchback 5MT | 5.0L High-Output EFI V8 | 5-speed manual overdrive | Three-door hatchback |
| GT Three-door hatchback 4AT | 5.0L High-Output EFI V8 | 4-speed automatic overdrive | Three-door hatchback |
| GT Three-door hatchback 5MT | 5.0L High-Output EFI V8 | 5-speed manual overdrive | Three-door hatchback |
| LX Convertible 4AT | 2.3L EFI inline-four | 4-speed automatic overdrive | Convertible |
| LX Convertible 5MT | 2.3L EFI inline-four | 5-speed manual overdrive | Convertible |
Configuration-specific ownership
Maintenance for this exact configuration
These items are filtered to the engine, transmission, trim, and model-year applicability recorded for this configuration. Broad Amazon category searches are suppressed here; shopping links appear only beside catalog-backed part numbers.
Service desk
What this car needs & when
Use this as a service-planning checklist for 1991 Ford Mustang LX 5.0L Convertible 4AT. Start with the interval, confirm which engine or configuration you have, then use an exact ordering reference when one is verified.
- Service topics
- 7
- Scheduled topics
- 6
- Applicability stated
- 7
- Exact references
- 1
Before ordering Identify your engine, options and build date. Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.
Engine oil and filterView intervals, applicability and sources
Engine oil and filter
Sourced interval available
Source: Operation CHARM — 1991 Ford Mustang factory service schedule mirror · Normal Service 7,500/15,000/30,000-mile and Severe Service 3,000/30,000-mile records; 2.3L SOHC and 5.0L HO schedules cross-checked · checked
Severe service
Source: Operation CHARM — 1991 Ford Mustang factory service schedule mirror · Normal Service 7,500/15,000/30,000-mile and Severe Service 3,000/30,000-mile records; 2.3L SOHC and 5.0L HO schedules cross-checked · checked
Engine oil filterView intervals, applicability and sources
Engine oil filter
Exact reference available
Manufacturer application-catalog fitment only; this does not establish an oil-change interval.
5.0L High-Output EFI V8
Baldwin B2
Source: Baldwin Filters — Automotive Applications catalog (2017) · PDF page 260 — Ford 1991, Mustang 5.0L row · checked
Verified ordering references
- Service replacementBaldwin B2
Qty. 1 · Engine oil filter · catalog-listed
Baldwin's manufacturer application table lists this filter for the stated model year and engine. Confirm the VIN and installed engine before ordering.
Catalog: Baldwin Filters — Automotive Applications catalog (2017) · PDF page 260 — Ford 1991, Mustang 5.0L row · checked
Search this part on Amazon
Engine air-filter elementView intervals, applicability and sources
Engine air-filter element
Sourced interval available
Source: Operation CHARM — 1991 Ford Mustang factory service schedule mirror · Normal Service 7,500/15,000/30,000-mile and Severe Service 3,000/30,000-mile records; 2.3L SOHC and 5.0L HO schedules cross-checked · checked
Engine coolantView intervals, applicability and sources
Engine coolant
Sourced interval available
Source: Operation CHARM — 1991 Ford Mustang factory service schedule mirror · Normal Service 7,500/15,000/30,000-mile and Severe Service 3,000/30,000-mile records; 2.3L SOHC and 5.0L HO schedules cross-checked · checked
Spark plugs (except platinum)View intervals, applicability and sources
Spark plugs (except platinum)
Sourced interval available
Source: Operation CHARM — 1991 Ford Mustang factory service schedule mirror · Normal Service 7,500/15,000/30,000-mile and Severe Service 3,000/30,000-mile records; 2.3L SOHC and 5.0L HO schedules cross-checked · checked
Crankcase ventilation filterView intervals, applicability and sources
Crankcase ventilation filter
Sourced interval available
5.0L HO V8 — PCV valve and crankcase filter
Source: Operation CHARM — 1991 Ford Mustang factory service schedule mirror · Normal Service 7,500/15,000/30,000-mile and Severe Service 3,000/30,000-mile records; 2.3L SOHC and 5.0L HO schedules cross-checked · checked
Automatic transmission fluidView intervals, applicability and sources
Automatic transmission fluid
Sourced interval available
Source: Operation CHARM — 1991 Ford Mustang factory service schedule mirror · Normal Service 7,500/15,000/30,000-mile and Severe Service 3,000/30,000-mile records; 2.3L SOHC and 5.0L HO schedules cross-checked · checked
Search results may cover different scales, trims and model years. Check each listing; this search does not establish an exact replica of the documented vehicle.
Sources
Other 1991 configurations
- LX Two-door sedan 5MT
- LX Two-door sedan 4AT
- LX Three-door hatchback 5MT
- LX Three-door hatchback 4AT
- LX Convertible 5MT
- LX Convertible 4AT
- LX 5.0L Two-door sedan 5MT
- LX 5.0L Two-door sedan 4AT
- LX 5.0L Three-door hatchback 5MT
- LX 5.0L Three-door hatchback 4AT
- LX 5.0L Convertible 5MT
- GT Three-door hatchback 5MT
- GT Three-door hatchback 4AT
- GT Convertible 5MT
- GT Convertible 4AT