Champion 7426 Spark Plug
OE Quality 60-Day Returns
Champion
 Double Platinum Power

Champion 7426 Spark Plug

Brand Champion 7426
Ground Electrode Core Material Platinum
Electrical Terminal Type Non-removable nut
Center Electrode Tip Material Platinum
Pre-Gap Size 0.028
Pre-Gap Size 0.7
Ground Electrode Quantity 1
Insulator Height 0.118
Manufacturer Heat Range 4
Seat Type Flat
Reach 1.043
Resistor Type Yes
Hex Type Bi-hex
Hex Size 0.546
Hex Size 14/bi-hex
Product line Double Platinum Power
Fits Mercedes-Benz and Mini · 141 vehicles

Double Platinum Power. Delivers stronger performance with sharper spark focus.

Platinum electrodes. Fine-wire center and pad ground electrodes help maximize service life.

Heat-Active alloy. Supports efficient combustion for consistent ignition performance.

Cross-references Bosch ZQR8SI302, Hayden 5992 and Monroe Shocks & Struts 5843 for the same application. See all 14.

$19.15Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $19.15
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Spark Plug options

Champion Double Platinum Power 7426 Spark Plug

Champion Double Platinum Power 7426 is a platinum spark plug built for direct-fit applications that call for a 0.028 in. gap and a flat seat design. It is listed for a wide range of Mercedes-Benz and Mini models, including Mercedes-Benz SL550, E350, S550, and Mini Cooper applications.

Key Features

  • Platinum center electrode tip and platinum ground electrode core for long service life
  • Heat-Active alloy helps maintain sharper spark focus under operating heat
  • Pre-gapped to 0.028 in. / 0.7 mm
  • Resistor design for stable ignition performance
  • Flat seat with 1.043 in. reach and non-removable nut terminal
  • Bi-hex 14 mm / 0.546 in. hex size for service access

Product Line Details

Champion Double Platinum Power plugs are built around a platinum-on-platinum electrode design. The fine-wire center electrode and platinum pad ground electrode are used to support consistent spark targeting and extended wear characteristics in demanding ignition systems.

Detailed Description

Part number 7426 is a Champion spark plug engineered for secondary ignition systems that specify a platinum plug with a 0.028 in. gap. The Heat-Active alloy construction is paired with a platinum fine-wire center electrode and platinum ground electrode pad to promote focused spark delivery and durable operation. This plug cross-references Monroe Shocks & Struts (e.g., 5843) for the same application.

Compatible With Mercedes-Benz and Mini fitments including 2013-2020 Mercedes-Benz SL550, 2012-2017 Mercedes-Benz E550, 2012-2016 Mercedes-Benz E350, 2011-2017 Mercedes-Benz S63 AMG, 2009-2015 Mini Cooper, and 2011-2016 Mini Cooper Countryman. The part number 7426 is also referenced in OE-style applications such as Mercedes-Benz SL63 AMG, GLE350, and CLS550 listings.

Common Uses

  • Replacing worn spark plugs that can cause rough idle
  • Addressing misfire codes tied to ignition wear
  • Restoring cold-start and throttle response performance
  • Correcting spark plug gap-related drivability issues
  • Servicing platinum plug applications in Mercedes-Benz and Mini engines

Installation Notes

Verify the engine application against the vehicle’s service information before installation. Confirm the specified 0.028 in. gap, flat seat style, reach, and terminal type match the original plug requirement. Use proper spark plug service procedures to avoid thread damage and ensure correct torque.

Quality Assurance

Champion’s Double Platinum Power line uses platinum electrode materials and a resistor design to support consistent ignition performance in approved applications. Part number 7426 is cataloged with confirmed fitment data for Mercedes-Benz and Mini models across 2009-2020 model years.

Related reading

This part fits 141 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypeNotes
2020Mercedes-BenzSL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2019Mercedes-BenzGLE63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2019Mercedes-BenzSL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2019Mercedes-BenzSL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2018Mercedes-BenzCLS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2018Mercedes-BenzCLS63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2018Mercedes-BenzG63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2018Mercedes-BenzGLE3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2018Mercedes-BenzGLE63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2018Mercedes-BenzSL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2018Mercedes-BenzSL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzCLS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzCLS63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzE5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzG63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzGLE3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzGLE63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzMaybach S5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzSL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2017Mercedes-BenzSL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzCLS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzCLS63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzE3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzE5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzE63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzG63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzGL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzGL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzGLE3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzGLE63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzSL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzSL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzSLK3503.5LV6—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016Mercedes-BenzSLK55 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016MiniCooper Countryman1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2016MiniCooper Paceman1.6LL4—Gap 0.028 (in); Actual OE Part; Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzC3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzCLS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzCLS63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzE3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzE4003.5LV6—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzE5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzE63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzE63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzG63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzGL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzGL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzML3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzML63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzSL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzSL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzSLK3503.5LV6—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015Mercedes-BenzSLK55 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015MiniCooper1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015MiniCooper Countryman1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2015MiniCooper Paceman1.6LL4—Gap 0.028 (in); Actual OE Part; Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzC3003.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzC3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzCL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzCL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzCLS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzCLS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzCLS63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzE3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzE4003.5LV6—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzE5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzE63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzE63 AMG S5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzG63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzGL4504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzGL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzGL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzML3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzML5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzML63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzSL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzSL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzSLK3503.5LV6—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014Mercedes-BenzSLK55 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014MiniCooper1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014MiniCooper Countryman1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2014MiniCooper Paceman1.6LL4—Gap 0.028 (in); Actual OE Part; Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzC3003.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzC3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzCL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzCL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzCLS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzCLS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzE3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzE4003.5LV6—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzE5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzE63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzG63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzGL4504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzGL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzGL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzML3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzML5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzML63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzSL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzSL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzSLK3503.5LV6—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013Mercedes-BenzSLK55 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013MiniCooper1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013MiniCooper Countryman1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2013MiniCooper Paceman1.6LL4—Gap 0.028 (in); Actual OE Part; Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzC3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzCL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzCL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzCLS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzCLS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzE3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzE5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzE63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzML3503.5LV6GASGap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzML5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzML63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzR3503.5LV6—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzS5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzSLK3503.5LV6—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012Mercedes-BenzSLK55 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012MiniCooper1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2012MiniCooper Countryman1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2011Mercedes-BenzCL5504.7LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2011Mercedes-BenzCL63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2011Mercedes-BenzS63 AMG5.5LV8—Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2011MiniCooper1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2011MiniCooper Countryman1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2010MiniCooper1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
2009MiniCooper1.6LL4—OE Type; Gap 0.028 (in); Plug Type Number RERX4PMPB; Double Platinum Power
Directly replaces or cross-references 14 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — ZQR8SI302Hayden — 5992Monroe Shocks & Struts — 5843NGK — 9022395770121200340981212216333212122293697ILZKBR7A8GILZKBR7B8DGPLZKBR7AGPLZKBR7B8DGRERX4PMPBZ332