NGK IX Iridium Spark Plug Box of 4 (BPR6EIX) NGK NGK6637
NGK IX Iridium Spark Plug Box of 4 (BPR6EIX) NGK NGK6637
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NGK IX Iridium Spark Plug Box of 4 (BPR6EIX)

NGK
NGK6637
87295166376
Spark Plugs
1 Units In Stock - Ships Next Business Day
Engine, Ignition, NGK, Spark Plugs
$ 90.60
$ 90.60

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

Request For Information

Have questions about NGK IX Iridium Spark Plug Box of 4 (BPR6EIX)? Fill out the form below and we'll get back to you by the next business day.
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