{"product_id":"ignition-coil-spark-plugs-for-workhorse-p32-w20-w22-2001-2003-8-1l-v8","title":"Ignition Coil \u0026 Spark Plugs for Workhorse P32 W20 W22 (2001-2003) 8.1L V8","description":"\u003ch2\u003eHigh-Energy Ignition Coil \u0026amp; Spark Plug Kit for 2001-2003 Workhorse P32, W20, W22\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces degraded OEM ignition coils, spark plugs, and wires to restore spark energy, smooth idle, and resolve misfire codes on heavy-duty 8.1L V8 applications.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock P32, W20, W22 Thermal Breakdown Weakness\u003c\/h3\u003e\n  \u003cp\u003eHeavy-duty Workhorse chassis, particularly motorhome platforms like the P32, W20, and W22, subject the 8.1L Vortec engine to severe heat soak and prolonged heavy engine loads. Over time, the factory ignition coil housings and wire insulation degrade from this continuous thermal cycling. This mechanical stress leads to micro-cracks in the coil's epoxy potting, allowing moisture ingress, internal arcing, and ground faults. The resulting voltage drop causes weakened spark energy, engine misfires under load (often triggering P0300-series OBDII codes), reduced fuel efficiency, and compromised drivability during climbs or towing.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis comprehensive ignition tune-up kit utilizes high-grade thermal-resistant materials to withstand the brutal under-hood temperatures of the L18 V8. The ignition coils feature upgraded internal copper windings and premium high-dielectric epoxy potting to maximize secondary voltage output and prevent high-temp breakdown. The accompanying spark plug wires employ thick silicone jackets and high-temp boots to resist the cracking and pinhole leaks that lead to spark bleed-off. Combined with the included spark plugs, this matched system guarantees optimized spark delivery, restoring factory combustion efficiency, lowering emissions, and delivering reliable torque output for maximum payload capacity.\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;\"\u003e2001-2003 Workhorse P32, W20, W22\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;\"\u003eL18 (Vortec 8100) \/ P-Series \u0026amp; W-Series\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;\"\u003e340 hp \/ 455 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, UF192, 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\u003e2001 Workhorse P32 8.1L V8\u003c\/li\u003e\n    \u003cli\u003e2002 Workhorse P32 8.1L V8\u003c\/li\u003e\n    \u003cli\u003e2003 Workhorse P32 8.1L V8\u003c\/li\u003e\n    \u003cli\u003e2001 Workhorse W20 8.1L V8\u003c\/li\u003e\n    \u003cli\u003e2002 Workhorse W20 8.1L V8\u003c\/li\u003e\n    \u003cli\u003e2003 Workhorse W20 8.1L V8\u003c\/li\u003e\n    \u003cli\u003e2001 Workhorse W22 8.1L V8\u003c\/li\u003e\n    \u003cli\u003e2002 Workhorse W22 8.1L V8\u003c\/li\u003e\n    \u003cli\u003e2003 Workhorse W22 8.1L V8\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Workhorse Reliability Standard\u003c\/h3\u003e\n  \u003cp\u003eEngineered for the rigorous demands of heavy motorhomes and commercial chassis platforms, this kit ensures consistent power delivery, optimal fuel burn, and steadfast towing reliability across long-haul cross-country routes.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50065389158648,"sku":"DS-EL1C5D5PX","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-workhorse-p32-w20-w22-2001-2003-8-1l-v8-1.webp?v=1785257290","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-spark-plugs-for-workhorse-p32-w20-w22-2001-2003-8-1l-v8","provider":"Performance Chip Tuning","version":"1.0","type":"link"}