{"product_id":"ignition-coil-spark-plugs-for-chevrolet-p30-gmc-p35-p3500-van-1998-1999-7-4l-v8","title":"Ignition Coil \u0026 Spark Plugs for Chevrolet P30 GMC P35 P3500 Van (1998-1999) 7.4L V8","description":"\u003ch2\u003eHigh-Output Ignition Coil \u0026amp; Spark Plugs for 1998-1999 Chevrolet P30, P35\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eA complete ignition system overhaul kit designed to eliminate misfires and restore maximum voltage delivery to the combustion chamber.\u003c\/strong\u003e This comprehensive package includes eight application-specific ignition coils, spark plug wires, and spark plugs calibrated for the 7.4L V8.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock P-Series Ignition Shortcomings\u003c\/h3\u003e\n\u003cp\u003eThe factory ignition coils on the heavy-duty 7.4L Vortec V8 are highly susceptible to thermal degradation and voltage leaks as mileage accumulates. Sitting in a cramped forward-control chassis, the P30 and P35 engine bays suffer from severe heat soak. Over time, the constant thermal cycling breaks down the OEM coil's epoxy potting and the internal secondary windings. This thermal degradation leads to micro-cracks in the plastic housing, allowing moisture intrusion and cross-firing. The result is a weak spark, persistent misfires under heavy loads, sluggish throttle response, and a noticeable drop in the 410 lb-ft of torque needed to move these heavy commercial and recreational vehicles.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement ignition kit is engineered to withstand the brutal underhood temperatures of the P-Series chassis. The upgraded ignition coils feature high-grade copper windings and premium dielectric epoxy potting to maximize energy transfer while resisting thermal breakdown. The housing is molded from high-dielectric reinforced polymer to eliminate pinhole leaks and housing cracks. Paired with low-resistance spark plug wires featuring heavy-duty silicone boots, this system ensures a highly focused, maximum-voltage spark reaches the plug electrodes. By delivering a hotter, more consistent spark, the 7.4L L29 engine achieves complete combustion, resulting in smoother idle quality, restored towing power, and lower emissions without the risk of high-load spark blowout.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1998-1999 Chevrolet P30, GMC P35 \/ P3500\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eVortec 7400 (L29) 7.4L V8 \/ GM P-Series Forward Control\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e290 hp \/ 410 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eD580, UF-192, 12556450, 12558948\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1998-1999 Chevrolet P30 7.4L V8\u003c\/li\u003e\n  \u003cli\u003e1998-1999 GMC P35 7.4L V8\u003c\/li\u003e\n  \u003cli\u003e1998-1999 GMC P3500 7.4L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Chevrolet Commercial Durability\u003c\/h3\u003e\n\u003cp\u003eFor heavy-duty fleet trucks and RVs relying on the GM P-Chassis, consistent ignition performance is mandatory. This kit ensures reliable starts, sustained towing capability, and maximum uptime for your 7.4L workhorse.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50065385881848,"sku":"DS-EI4AHAEGA","price":239.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-chevrolet-p30-gmc-p35-p3500-van-1998-1999-7-4l-v8-1.webp?v=1785257170","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-spark-plugs-for-chevrolet-p30-gmc-p35-p3500-van-1998-1999-7-4l-v8","provider":"Performance Chip Tuning","version":"1.0","type":"link"}