AW11 DENSO Spark Plugs | 4A-GE / 4A-GZE (1985-89 MR2)
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DENSO Spark Plug Set
For 1985–1989 U.S.-Market Toyota MR2 AW11 4A-GE & 1988–1989 AW11 4A-GZE
Overview
Choose a complete four-plug DENSO set for the stock-engine AW11 MR2 in one of two electrode technologies: Double Platinum or Iridium TT. The 4A-GE and supercharged 4A-GZE use different DENSO heat ranges, so select the engine that matches the vehicle.
DENSO was an original-equipment spark-plug supplier for the AW11 MR2. The Double Platinum configuration retains the platinum center-and-ground electrode construction specified for the factory application. Iridium TT provides a modern twin-tip alternative while retaining the corresponding engine-specific heat range. All four configurations are factory pre-gapped by DENSO to the specified gap for that plug design.
Key Features
- Complete four-plug set for one AW11 MR2 engine
- Engine-specific heat ranges: DENSO 16 for 4A-GE and DENSO 20 for 4A-GZE
- Two plug technologies: Double Platinum and Iridium TT
- Factory pre-gapped: 1.0 mm for Iridium TT; 1.1 mm for Double Platinum
- 14 mm thread diameter and 19 mm reach across all configurations; 16 mm hex for Double Platinum and 20.6 mm hex for Iridium TT
- Gasket / flat-seat design with solid terminals and resistor construction
Vehicle Fitment
- 1985–1989 U.S.-Market Toyota MR2 AW11 — 4A-GE Naturally Aspirated
- 1988–1989 U.S.-Market Toyota MR2 AW11 Supercharged — 4A-GZE
Fitment Notes
- Select the plug set by engine. The 4A-GE and 4A-GZE configurations use different heat ranges.
- Fits both automatic and manual factory applications with the corresponding engine.
- Engine swaps, turbo conversions, and altered boost or ignition configurations are outside this factory-engine application.
For naturally aspirated 4A-GE cars, the DENSO Ignition Wire Set is available separately. It does not fit 4A-GZE applications.
Product Specifications
- Brand: DENSO
- Product Type: Ignition
- Component Type: Spark Plug
- Quantity: 4 spark plugs per selected configuration
- Thread Diameter: 14 mm
- Thread Reach: 19 mm
- Hex Size: 16 mm for Double Platinum; 20.6 mm for Iridium TT
- Seat Type: Gasket / flat seat
- Terminal Type: Solid
- Resistor: 5 kΩ
- Factory Pre-Gapped: 1.0 mm for Iridium TT; 1.1 mm for Double Platinum
Which Spark Plug Is Right for You?
Double Platinum — Best Factory-Style Replacement (Recommended)
- Platinum center and ground electrodes, matching factory-style construction.
- Excellent durability and long service life.
- Best for: Stock AW11s, factory restorations, and owners prioritizing longevity.
Iridium TT — Best Premium Upgrade
- Ultra-fine iridium center electrode for consistent ignition.
- Premium electrode technology with excellent wear resistance.
- Best for: Owners seeking a premium, long-lasting spark plug.
Our Recommendation: Double Platinum offers the best balance of factory-style construction, durability, and value for most stock AW11 MR2 owners.
Note: Always select the correct 4A-GE or 4A-GZE engine configuration, as each requires a different heat range.
Available Configurations
4A-GE Naturally Aspirated / Double Platinum
- (4) DENSO Double Platinum spark plugs, each with its sealing washer
4A-GE Naturally Aspirated / Iridium TT
- (4) DENSO Iridium TT spark plugs, each with its sealing washer
4A-GZE Supercharged / Double Platinum
- (4) DENSO Double Platinum spark plugs, each with its sealing washer
4A-GZE Supercharged / Iridium TT
- (4) DENSO Iridium TT spark plugs, each with its sealing washer