Z33Seller listing
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View listing at Z1 Motorsports; opens in a new tab350Z/G35 · Buyer's guide
350Z Ignition Coils and Spark Plugs: VQ35DE/RevUp vs VQ35HR
US-spec 2003-2008 Nissan 350Z Coupe and 2004-2008 Roadster; VQ35DE/RevUp and VQ35HR ignition families separated.
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WHERE TO BUY
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What you need to know
Match engine first: 2003-2006 VQ35DE including RevUp versus 2007-2008 VQ35HR. Diagnose a misfire by code, coil swap, plug condition/gap, oil intrusion, injector, compression, and wiring rather than replacing all parts blindly. Stock heat range is not a universal modified-engine recommendation.
OEM numbers
VQ35DE checked coil family 22448-AL615 -> 22448-AL61Cstock plug 22401-5M015NGK PLFR5A-11. VQ35HR checked coil family 22448-JA10A -> 22448-JA11Cchecked stock plug 22401-EW61C. Six coils and six plugs are required.Supersession
22448-AL615 -> 22448-AL61C for the checked DE coil family; 22448-JA10A -> 22448-JA11C for HR. No DE-to-HR interchange is claimed.
Fitment
Match engine first: 2003-2006 VQ35DE including RevUp versus 2007-2008 VQ35HR. Diagnose a misfire by code, coil swap, plug condition/gap, oil intrusion, injector, compression, and wiring rather than replacing all parts blindly. Stock heat range is not a universal modified-engine recommendation.
Aftermarket options
Checked paths include Nissan/NGK plugs, Nissan coils, Hitachi DE coils, Denso HR coils, and Z1 six-coil sets. Counterfeit risk and variant errors make exact manufacturer/part-number confirmation important.
Before you buy
Confirm VQ35DE/RevUp versus VQ35HR and the exact coil connector/part number. Stock plug heat range is for stock service unless a qualified tuner specifies otherwise. Prices are per coil/plug unless a set is stated.
Research and fitment sources
Supersede reviewed 9 unique research sources for this guide. 6 also appear above as a seller or official action and are not repeated here; 3 additional citations follow.
Research last verified .