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Champion 842 Spark PlugOE Quality 60-Day Returns
Part #: 842

Champion 842 Spark Plug

Copper Plus
3 vehicles fit this part
Select your vehicle to confirm fitment
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Copper Plus
Fitment: Volvo, Packard, Cadillac, Chevrolet, Buick, and LaSalle, 444, 445, Custom Eight, Deluxe Eight, Model 2301, Model 2302, Model 2306, Model 2322, Model 2332, Model 2333, Standard Eight, Super Deluxe Eight, Super Eight, PV 444, Commercial Chassis, Series 60 Special Fleetwood, Series 61, Series 62, Series 75 Fleetwood, Fleetline, Fleetline Truck, Fleetmaster, Fleetmaster Truck, Sedan Delivery, Stylemaster Series, Suburban, Truck, Model 2201, Model 2202, Model 2206, Model 2211, Model 2222, Model 2226, Model 2233, Model 2100, Model 2103, Model 2106, Model 2111, Model 2126, BK, CK, DJ, DP, DR, DS, Model 2101, Model 2130, BL, BM, BN, BG, Century Series 60, Limited Series 90, Roadmaster Series 70, Special Series 40-A, Special Series 40-B, Super Series 50, Series 60, Series 63, Series 67, Series 75, BJ, Special Deluxe, Model 2000, Model 2001, Model 2003, Model 2004, Model 2005, Model 2006, Model 2007, Model 2008, Model 2010, Model 2011, Model 2020, Model 2021, Model 2023, Model 2030, Model 2055, AJ, AK, AL, AM, AN, YR, Model 1900, Model 1901, Model 1903, Model 1904, Model 1905, Model 1906, Model 1907, Model 1908, Model 1951, Limited Series 80, Roadmaster Series 80, Special 40, Series 60 Special, Series 72, Series 50, Special Series 52, Model 1800, Model 1801, Model 1803, Model 1804, Model 1805, Model 1806, Model 1807, Model 1808, Roadmaster Series 90, Model 1700, Model 1701, Model 1702, Model 1703, Model 1705, Model 1707, Model 1708, Model 1600, Model 1601, Model 1601-D, Model 1602, Model 1603, Model 1604, Model 1605, Model 1607, Model 1608, Model 115-C, Model 120 C, and Model 120-CD
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Overview of Champion Copper Plus 842 Spark Plug

The Champion Copper Plus 842 spark plug is engineered for reliable ignition performance in Cadillac Commercial Chassis vehicles. Designed with durable nickel and copper alloy components, this spark plug ensures consistent engine operation and efficient combustion.

  • Ground electrode core made of nickel for durability
  • Nickel center electrode tip for stable spark delivery
  • Pre-gap size of 0.035 inches for optimal ignition
  • Flat seat type with 0.25-inch reach for proper fitment
  • Thread diameter of 0.394 inches (10 mm) compatible with specified engines
  • Removable nut electrical terminal type for easy installation
  • Heat range rating of 6 suitable for commercial chassis applications
  • Hex size of 0.625 inches (15.88 mm) for standard wrench compatibility
  • No resistor type to match specific ignition system requirements

Details on Champion Copper Plus Spark Plug Line

The Copper Plus line by Champion focuses on spark plugs that utilize copper cores to enhance conductivity and heat dissipation. This line is designed to provide stable ignition and improved engine performance in small engine and commercial vehicle applications. The 842 spark plug benefits from this technology by combining copper and nickel materials to maintain durability and consistent spark quality in Cadillac Commercial Chassis models.

Technical Description and Specifications

The Champion Copper Plus 842 spark plug features a single ground electrode made from a nickel copper alloy, which balances wear resistance and conductivity. The center electrode tip is nickel, measuring 0.072 inches in diameter, ensuring a reliable spark. The plug has a flat seat type and a reach of 0.25 inches, which is critical for proper combustion chamber sealing in Cadillac Commercial Chassis engines. The pre-gap is set at 0.035 inches, optimized for ignition timing and fuel efficiency. The thread diameter is 0.394 inches (10 mm), and the plug includes a removable nut electrical terminal for ease of connection. With a heat range of 6, this spark plug is suited for the thermal demands of commercial chassis engines.

Applications and Problem Solving

  • Compatible with Cadillac Commercial Chassis vehicles requiring a 0.394-inch thread diameter spark plug
  • Addresses misfiring issues caused by worn or damaged electrodes
  • Helps improve cold starts and overall engine responsiveness
  • Reduces fouling and carbon buildup with proper gap and materials
  • Supports stable ignition in commercial vehicle operating conditions

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.035 inches to match engine specifications. Use a torque wrench to tighten the plug to the manufacturer’s recommended torque to avoid damage to the flat seat and ensure proper sealing. The removable nut terminal allows for flexible electrical connections, but ensure secure attachment to prevent ignition issues. Inspect the spark plug threads and clean the cylinder head threads if necessary before installation.

Quality Assurance and Warranty

Champion Copper Plus spark plugs are manufactured to meet OEM standards for fit, form, and function. The materials and construction are designed to provide consistent performance in Cadillac Commercial Chassis vehicles. While specific warranty details are not provided here, Champion products typically come with manufacturer-backed quality assurance to support reliability and durability.

BrandChampion
Part Number842
PositionCopper Plus
Center Electrode Diameter (Inch)0.072
Center Electrode Tip MaterialNickel
ClassificationChampion Copper Plus Small Engine
Electrical Terminal TypeRemovable Nut
Ground Electrode Core MaterialNickel
Ground Electrode MaterialNickel Copper Alloy
Ground Electrode Quantity1
Hex Size0.625
Hex Size15.880
Hex TypeHex
Installed Height (Inch)2.15
Manufacturer Heat Range6
Plug TypeUY6
Pre-Gap Size0.035
Pre-Gap Size0.90
Reach0.25
Resistor TypeNo
Seat TypeFlat
Taper Diameter (Inch)0.31
Thread Diameter0.394
Thread Diameter10.000

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1948CadillacCommercial Chassis5.7LV8N/AGap 0.025 (in); Plug Type Number UY6; Copper Plus
1947CadillacCommercial Chassis5.7LV8N/AGap 0.025 (in); Plug Type Number UY6; Copper Plus
1946CadillacCommercial Chassis5.7LV8N/AGap 0.025 (in); Plug Type Number UY6; Copper Plus

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

104104COM3136M8P4P6U14UU17UU7EUY6UY86XY6Y4Y4AY5Y6Y8

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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