Champion
Champion Iridium

Champion 9782 Spark Plug

Brand Champion 9782
Center Electrode Tip Material Iridium
Classification Champion Iridium
Electrical Terminal Type Non-Removable Nut
Ground Electrode Core Material Platinum
Ground Electrode Quantity 1
Hex Size 0.625
Hex Size 15.880
Hex Type Hex
Insulator Height 0.08
Manufacturer Heat Range 8
Plug Type RC8ZWYPB4
Pre-Gap Size 0.040
Pre-Gap Size 1.02
Reach 0.866
Resistor Type Yes
Seat Type Flat
Thread Diameter 0.551
Thread Diameter 14.000
Product line Champion Iridium
Fits Honda · 5 vehicles

Iridium center electrode. Fine-wire design sharpens spark focus for stronger performance.

Platinum ground electrode. Helps deliver consistent ignition performance.

Champion Iridium. Premium spark plug line engineered for maximum performance.

Cross-references Gates 7743, 101905600C and 101905601F for the same application. See all 6.

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Champion Iridium Spark Plug 9782 Overview

Champion Iridium 9782 is a secondary ignition spark plug built with a fine-wire iridium center electrode and a platinum ground electrode for a focused spark event. It is a direct-fit option for select Honda Accord applications, including 2003-2007 Honda Accord with Federal Emissions System.

Key Features

  • Iridium center electrode tip for precise spark delivery
  • Platinum ground electrode core material for durability
  • Pre-gapped to 0.040 in. (1.02 mm)
  • Resistor-type spark plug for ignition system noise control
  • Flat seat design with 14 mm thread diameter and 0.866 in. reach
  • Hex size: 0.625 in. (15.880 mm)
  • Non-removable nut terminal

Product Details

Champion Iridium 9782 is part of the Champion Iridium line, which focuses on fine-wire electrode construction for a sharper spark focus and consistent ignition performance. The iridium center electrode and platinum ground electrode are selected to support stable firing characteristics in demanding daily driving conditions. This spark plug cross-references Monroe Shocks & Struts (e.g., 7743) for the same application. The 9782 part number is also referenced in OE-style interchange listings for select Honda applications.

Compatible With 2003-2007 Honda Accord, N/A, including Federal Emissions System applications with plug type RC8ZWYPB4. This Champion 9782 spark plug is a fitment-based replacement for drivers searching for a Honda Accord spark plug 2003-2007, Champion Iridium 9782, or RC8ZWYPB4 spark plug replacement.

Common Issues This Part May Address

  • Hard starting caused by worn spark plug electrodes
  • Rough idle from inconsistent ignition firing
  • Misfire conditions related to aged plugs
  • Reduced throttle response from degraded spark quality
  • Maintenance replacement for high-mileage ignition service

Installation Notes and Tips

Verify the vehicle’s plug type, thread diameter, reach, and seat style before installation. Confirm the specified gap for the application and compare it to the pre-gap setting of 0.040 in. before use. For 2003-2007 Honda Accord Federal Emissions System applications, match the plug type number RC8ZWYPB4 and follow the manufacturer’s service procedure for torque and inspection.

Quality Assurance

Champion Iridium plugs are built with iridium and platinum electrode materials to support durable ignition performance and consistent spark focus. Part number 9782 is manufactured to the listed specifications for direct-fit service in the confirmed Honda Accord applications.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2007HondaAccord2.4LL4N/Awith Federal Emissions System; Gap 0.044 (in); Plug Type Number RC8ZWYPB4; Champion Iridium
2006HondaAccord2.4LL4N/Awith Federal Emissions System; Gap 0.044 (in); Plug Type Number RC8ZWYPB4; Champion Iridium
2005HondaAccord2.4LL4N/Awith Federal Emissions System; Gap 0.044 (in); Plug Type Number RC8ZWYPB4; Champion Iridium
2004HondaAccord2.4LL4N/Awith Federal Emissions System; Gap 0.044 (in); Plug Type Number RC8ZWYPB4; Champion Iridium
2003HondaAccord2.4LL4N/Awith Federal Emissions System; Gap 0.044 (in); Plug Type Number RC8ZWYPB4; Champion Iridium
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Gates — 7743101905600C101905601F0241235769PZFR5J11RC8ZWYPB4