SKU: 6637 | UPC: 87295166376
NGK IX Iridium Spark Plug Box of 4 (BPR6EIX) Fits 1958-2020 Classics BMW Mercedes Alfa Toyota
NGK Iridium IX BPR6EIX spark plugs in a box of 4 provide reliable ignition for classic car enthusiasts. These plugs fit vehicles including BMW 2002 Mercedes 230SL Alfa Romeo GTV Peugeot 504 and many others from 1958 to 2020. Drivers notice improved acceleration higher fuel efficiency extended durability stronger ignitability and resistance to fouling thanks to the tapered ground electrode and iridium construction.
Key Features
- Iridium Fine Wire Center Electrode: Six times harder than platinum for extended life and consistent performance in high-demand engines
- Tapered Cut Ground Electrode: Enhances starting idling and throttle response by improving flame kernel growth
- Extreme Ignitability: Provides stronger reliable sparks for complete combustion and power gains
- Anti-Fouling Design: Resists carbon deposits keeping plugs clean longer during extended use
- High Melting Point Alloy: Handles heat in modern and performance engines without degradation
Product Notes
- Pre-gapped to 0.031 inches (0.8mm) verify before installation
- Thread 14mm reach 19mm (0.75 inch) hex 21mm (13/16 inch) gasket seat
- Ships in protective retail box for safe handling
Installation Notes
- Professional installation recommended.
- Torque to 18-25 lb-ft using torque wrench avoid over-tightening
- Apply anti-seize to threads compatible with aluminum heads
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1959-1967 | Austin Healey | 3000 | Base |
| 1962-1967 | Austin Healey | Sprite | Base |
| 1968-1970 | Austin Healey | Sprite | MK IV |
| 1984-1989 | Bertone | X-1/9 | Base |
| 1964-1971 | BMW | 1600 | Base |
| 1968-1971 | BMW | 1600 | Cabriolet |
| 1971 | BMW | 1600 | Touring |
| 1966-1971 | BMW | 1600-2 | Base |
| 1960-1963 | Aston Martin | DB4 | Zagato |
| 1963-1965 | Aston Martin | DB5 | Base |
| 1961-1970 | Peugeot | 404 | Base |
| 1970-1979 | Peugeot | 504 | Base |
| 1963-1966 | Mercedes-Benz | 230SL | Base |
| 1968-1972 | Mercedes-Benz | 250 | Base |
| 1970-1972 | Mercedes-Benz | 250C | Base |
| 1966-1973 | Mercedes-Benz | 250SE | Base |
| 1967 | Mercedes-Benz | 250SL | Base |
| 1973-1974 | Mercedes-Benz | 280 | Base |
| 1966-1968 | Toyota | Stout | Base |
| 1968 | Triumph | TR250 | Base |
| 1969-1976 | Triumph | TR6 | Base |
| 1971-1972 | Volkswagen | 411 | Base |
| 1967-1973 | Saab | 96 | Base |
| 1967 | Alfa Romeo | 2600 | Berlina |
| 1971-1974 | BMW | 2002 | Base |
| 1970-1973 | Nissan | 240Z | Base |
| 1962-1974 | MG | MGB | Base |
| 1973-1977 | Dodge | Colt | Base |
| 1967-1975 | Fiat | 124 | Base |
| 1975-1979 | Honda | Civic | Base |
| 1985-1993 | Volkswagen | Cabriolet | Base |
Why Choose NGK?
- Original equipment supplier to major automakers worldwide
- Engineered for precision ignition in street and racing applications
- Backed by decades of spark plug innovation and testing
Frequently Asked Questions
- Q: Will BPR6EIX fit my BMW 2002 or Mercedes 280SL?
A: Yes fits 1966-1976 BMW 2002 series and 1968-1974 Mercedes 280 models verify your engine code for exact match - Q: What materials are used in NGK Iridium IX plugs?
A: Fine-wire iridium alloy center electrode pure iridium tip nickel alloy ground electrode for heat resistance - Q: What is the warranty on these spark plugs?
A: NGK offers a satisfaction guarantee replace defective plugs with proof of purchase
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Retail box 3.5 x 2.6 x 1.3 inches
- Weight: 0.25 lbs





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