Champion
RC12YC
Direct Match
Thread14 mm x 1.25
Gasket OD19.0 mm Reach
HeightHex 16.0 mm (5/8")
Outer Diam.Heat Range 12 (Med)
Bypass PressureGap 0.9 mm (0.035")
Standard Copper Spark Plug5 Direct
NGK
BKR6E
Cross-reference and physical dimensional analysis for OEM/aftermarket reference BKR6E. Inspect the specification table below before selecting a replacement cartridge or canister.
Equivalent Part Numbers(5 Cross-Matches)
Sorted by direct catalog match, then by 2-hop transitive inference.
Bosch
FR7DC+
Direct Match
Thread14 mm x 1.25
Gasket OD19.0 mm Reach
HeightHex 16.0 mm (5/8")
Outer Diam.Heat Range 7
Bypass PressureGap 0.8 mm (0.032")
Denso
K20PR-U
Direct Match
Thread14 mm x 1.25
Gasket OD19.0 mm Reach
HeightHex 16.0 mm (5/8")
Outer Diam.Heat Range 20
Bypass PressureGap 0.8 mm (0.032")
Autolite
3923
Direct Match
Thread14 mm x 1.25
Gasket OD19.0 mm Reach
HeightHex 16.0 mm (5/8")
Outer Diam.Heat Range Cold-Med
Bypass PressureGap 0.9 mm (0.035")
NGK
BKR6EIX
Direct Match
Thread14 mm x 1.25
Gasket OD19.0 mm Reach
HeightHex 16.0 mm (5/8")
Outer Diam.Heat Range 6 (Iridium)
Bypass PressureGap 0.8 mm
Partial Equivalence Note
Iridium upgrade replacement for extended service life (60,000+ miles).
Understanding Tolerance Differences
Manufacturers periodically make minor adjustments to overall filter canister height (+/- 3mm) to accommodate varying production lines. Such variances do not compromise function provided the thread pitch, gasket outer diameter, and bypass pressure PSI match OEM specifications.