Let's try this:
Stock Champion **** plug is RE14MCC5 (stock #440). The Double Platinum replacement is RE14PLP5 (stock #7440). I have those in my car now. Both Champions are a 14mm thread, 1" reach, taper seat, 5/8" hex.
Neither of those Champion numbers can be cross-referenced to an NGK number. However, both cross reference to Denso Iridium number ITV16. The ITV16 14mm thread, 25mm reach, 16mm(5/8") hex, tapered seat, 0.4mm iridium electrode, tapered cut U-groove ground, resistor, 0.44" gap.
If you want to go to a colder Denso plug, the number is ITV20. The Denso's are about $11.99 each.
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2003 Electric Blue PT Cruiser GT 5-spd
MOPAR Stage 1 kit
Custom Stage 1 emblem on rear hatch
Greddy Turbo Timer
AGP factory surge valve blockoff plate
AGP/TurboXS Type H-RFL BOV
160 degree thermostat
Magnacore plug wires
Champion RE14PLP5 Double Platinum plugs gapped .050\"
Screamin Demon coil
Momo shift knob
3 gauge pillar pod with Autometer Lunar boost, EGT and oil pressure gauges
Stewart Warner Shift Light
Streamline Designs third brake light overlay \"Turbo Cruzer\"
Rear splash guards
Rear spoiler
Hidden Hitch
Ichiban pedals
Streetglow Xenon headlight and foglight bulbs
PCV line oil seperator
Firestone Firehawk SZ50 215/50R17 tires
PT Tuning axle back exhaust and muffler
Mr. Dyno vehicle performance computer
Pioneer DEH-P77DH AM/FM/CD
Kenwood KSC-WA62RC The WooX 30w x 2 powered subwoofer
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