🏷️ Basic Information

Make:

Mazda

Model:

MX-5 Miata

Chassis Code:

NA

Generation:

First Generation (NA)

Platform:

Mazda M-Platform

Engine Code Primary:

B6 (1.6L)

👋 Introduction

Market Niche:

Essential for owners and independent repair shops specializing in the iconic Mazda MX-5 Miata (NA).

Value Proposition:

Provides critical OEM part identification and numbers, crucial for sourcing correct replacement parts and ensuring authenticity and proper fitment.

Comparison To Service Manuals:

Complements service manuals by focusing solely on parts identification and numbers, rather than repair procedures.

Illustrations:

Detailed exploded view diagrams for accurate part visualization.

Part Number Listing:

Comprehensive catalog of OEM part numbers, vital for ordering.

Utility:

Indispensable for DIY enthusiasts undertaking restoration or repair projects.

📋 Manual Details

Covered Years:

1991, 1992

Covered Models:

Mazda MX-5 Miata (NA)

Covered Trim Levels:

All trims

Estimated Page Count:

Approx. 200-400 pages (typical for OEM parts manuals of this era)

Type:

OEM Replacement Parts Manual / Parts Catalog

Description:

Illustrated with exploded parts diagrams, listing all part numbers for disassembly, repair, and assembly.

Language:

English

Format:

Printed (Original Equipment Manufacturer)

📖 Manual Coverage

Engine Components:

Engine block, cylinder head, pistons, crankshaft, camshafts, valves, timing components, oil system, cooling system, fuel system (injectors, pump, lines), intake and exhaust manifolds.

Transmission Drivetrain:

Manual transmission (gearbox), clutch assembly, driveshafts, differential, hubs, axles.

Suspension Steering:

Front suspension (control arms, springs, dampers, anti-roll bar), rear suspension (multi-link, springs, dampers, anti-roll bar), steering rack, steering column, power steering components (if applicable).

Brake System:

Front and rear brake calipers, rotors, pads, master cylinder, brake lines, parking brake mechanism.

Electrical System:

Starter motor, alternator, battery, ignition system, lighting (headlights, taillights, interior), wiring harnesses, fuses, relays, ECUs (Engine Control Unit), sensors.

Body Exterior:

Body panels (fenders, hood, doors, trunk lid), bumpers, grille, headlights, taillights, mirrors, soft top frame and mechanism, hardtop components (if applicable), emblems, trim.

Interior Components:

Dashboard, seats, seat belts, interior trim panels, steering wheel, shift knob, pedals, HVAC (Heating, Ventilation, Air Conditioning) components (blower motor, vents, heater core, evaporator core).

Wheels Tires:

Wheels (rims), lug nuts, tire specifications.

Disassembly Identification:

Identification of all individual parts and their placement within assemblies through exploded diagrams.

Part Identification:

Comprehensive listing of OEM part numbers for every component.

Assembly Guidance:

Visual reference for correct assembly order and orientation of parts.

Depth:

Component-level detail for parts replacement and identification. Does not include detailed repair procedures or diagnostic steps typically found in a service manual.

📊 Manual Specifications

Digital Format If Applicable:

N/A (Original is printed)

Print Quality:

OEM Standard (typically black and white line drawings and text)

Binding Type:

Typically bound (stapled or perfect bound) for durability in a workshop environment.

Paper Type:

Durable paper stock suitable for workshop use.

⚙️ Engine Specifications

Engine Type:

Naturally Aspirated Inline-4 (DOHC)

Displacement:

1.6 Liters (1598 cc)

Bore X Stroke:

78.0 mm x 83.6 mm

Compression Ratio:

9.4:1

Valve Configuration:

Dual Overhead Camshafts (DOHC), 16 Valves

Horsepower 1991:

115 hp @ 6500 rpm (US Market)

Torque 1991:

100 lb-ft @ 5000 rpm (US Market)

Horsepower 1992:

116 hp @ 6500 rpm (US Market)

Torque 1992:

100 lb-ft @ 5000 rpm (US Market)

Fuel Delivery:

Multi-point Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline (87 Octane Recommended)

Cooling Type:

Water-Cooled

Coolant Capacity:

5.4 Quarts (5.1 Liters)

Oil Capacity W Filter:

3.7 US Quarts (3.5 Liters)

Recommended Oil Viscosity:

SAE 10W-30 (API SG or higher)

🔧 Transmission

Type:

5-speed Manual Transmission

Type:

4-speed Automatic Transmission (Less Common)

Clutch Type:

Hydraulic, Dry Single Plate

Transmission Fluid Type:

API GL-4 SAE 75W-90 Gear Oil

Transmission Fluid Capacity:

Approx. 2.0 Liters (Manual)

📐 Dimensions

Length:

3915 mm (154.1 in)

Width:

1675 mm (65.9 in)

Height Soft Top Up:

1235 mm (48.6 in)

Wheelbase:

2265 mm (89.2 in)

Front Track:

1430 mm (56.3 in)

Rear Track:

1435 mm (56.5 in)

Ground Clearance:

135 mm (5.3 in)

Curb Weight:

Approx. 1000-1050 kg (2200-2315 lbs)

Gross Vehicle Weight Rating:

Not explicitly specified, but designed for driver + passenger + light cargo.

Towing Capacity:

Not Recommended

Standard Wheel Size:

14 x 5.5 inches

Optional Wheel Size:

15 x 6.0 inches (Later models/options)

Standard Tire Size:

185/60R14

Optional Tire Size:

195/50R15

Bolt Pattern:

4x100 mm

Center Bore:

54.1 mm

Lug Nut Size:

M12 x 1.5

Recommended Tire Pressure Front:

200 kPa (29 psi)

Recommended Tire Pressure Rear:

200 kPa (29 psi)

🛡️ Safety Features

NHTSA Rollover Rating:

Not rated in the same manner as modern vehicles; designed with a low center of gravity. Roll bar is a standard safety feature.

Brakes:

Front: Ventilated Disc, Rear: Solid Disc (ABS optional on later models, rare for '91-'92).

Traction Control:

N/A

Airbags:

Driver's airbag standard (from 1990 MY in many markets).

Seat Belts:

Three-point inertia reel seatbelts.

Rollover Protection:

Reinforced windshield frame and standard behind-seat roll bar.

💡 Technology Features

Head Unit:

Factory fitted AM/FM stereo with cassette player. Optional CD player in later models.

Speakers:

Typically 4 speakers (dashboard and door mounted).

ABS:

Optional on select models, not standard for '91-'92.

Bluetooth:

N/A (Requires aftermarket head unit installation)

Usb:

N/A (Requires aftermarket head unit installation)

🔧 Maintenance

Oil Change Interval:

Every 5,000 miles or 6 months, whichever comes first.

Air Filter Replacement:

Inspect every 15,000 miles, replace as needed (typically 30,000 miles).

Spark Plug Replacement:

Every 30,000 miles (NGK BKR5E-11 or equivalent).

Timing Belt Replacement:

Crucial: Every 60,000 miles or 5 years due to interference engine design. Includes idler pulley and tensioner.

Brake Fluid Flush:

Every 2 years (DOT 3 or DOT 4 recommended).

Coolant Flush:

Every 2 years or 30,000 miles.

Engine Oil:

API SG, SAE 10W-30

Transmission Fluid Manual:

API GL-4 SAE 75W-90 Gear Oil

Brake Fluid:

DOT 3 or DOT 4

Coolant:

50/50 mix of ethylene glycol antifreeze and distilled water

Power Steering Fluid If Equipped:

Dexron II or equivalent ATF

Common Wear Items:

Clutch, throw-out bearing, radiator, water pump, alternator, starter motor, cam angle sensor, crankshaft position sensor, fuel injectors, window regulators, soft top canvas.

Rust Prone Areas:

Rocker panels, rear quarter panels, chassis rails, sills, subframes.

Engine Specific:

Oil leaks from valve cover gasket and oil pan gasket. Timing belt failure can cause catastrophic engine damage. Coil on plug (COP) conversion is a popular upgrade.

Electrical Specific:

Corrosion in wiring harnesses, intermittent issues with pop-up headlights, HVAC blower resistor failure.

📚 Vehicle History

Heritage Connection:

Direct descendant of the Lotus Elan and classic British roadsters. Embodiment of Mazda's Jinba-Ittai ('horse and rider as one') philosophy.

Launch Year:

1989 (as a 1990 model year vehicle)

Design Philosophy:

Lightweight, affordable, pure driving experience.

Key Innovations Na Generation:

Balanced chassis, rear-wheel drive layout, pop-up headlights.

Production Years:

1989-1997 (NA generation)

Manufacturing Locations:

Hiroshima, Japan

🏆 Awards & Recognition

Car And Driver 10 Best:

Named to Car and Driver's 10Best list for multiple consecutive years (1990-1992 and beyond).

Auto Revolutionary Award:

Widely credited with revitalizing the affordable sports car market.

Motor Trend Import Car Of The Year:

Nominated and critically acclaimed.