WhichPartFits.com

Small Engine Parts Reference

Part Type

Spark Plugs

Spark plug hub for cross-referencing common small-engine plug numbers and verifying gap, reach, heat range, and terminal style.

Verify before ordering: Fitment can vary by serial number, production date, region, and sub-model. Match the OEM number and physical dimensions before ordering.

Models in This Hub

Briggs & Stratton 450e SeriesSmall Engine · 5 part types Briggs & Stratton 500e SeriesSmall Engine · 5 part types Briggs & Stratton 550ex SeriesSmall Engine · 5 part types Briggs & Stratton 625ex SeriesSmall Engine · 5 part types Briggs & Stratton 675ex SeriesSmall Engine · 5 part types Briggs & Stratton 725EXi SeriesSmall Engine · 5 part types Briggs & Stratton 850EXi SeriesSmall Engine · 5 part types Echo CS-310Chainsaw · 9 part types Echo CS-330TChainsaw · 10 part types Echo CS-352Chainsaw · 9 part types Echo CS-355TChainsaw · 10 part types Echo CS-400Chainsaw · 9 part types Echo CS-440Chainsaw · 10 part types Echo CS-500PChainsaw · 10 part types Echo CS-590 Timber WolfChainsaw · 9 part types Echo PB-250LNHandheld Blower · 7 part types Echo PB-500Backpack Blower · 6 part types Echo PB-580TBackpack Blower · 7 part types Echo PB-770Backpack Blower · 6 part types Echo SRM-210Trimmer · 9 part types Echo SRM-225Trimmer · 9 part types Echo SRM-230Trimmer · 9 part types Echo SRM-266Trimmer · 9 part types Echo SRM-280Trimmer · 8 part types Echo SRM-310Trimmer · 8 part types Honda GX120Small Engine · 4 part types Honda GX160Small Engine · 5 part types Honda GX200Small Engine · 5 part types Honda GX270Small Engine · 5 part types Honda GX340Small Engine · 5 part types Honda GX390Small Engine · 5 part types Honda GX630Small Engine · 5 part types Husqvarna 120Chainsaw · 10 part types Husqvarna 125LTrimmer · 8 part types Husqvarna 128CTrimmer · 8 part types Husqvarna 128LDTrimmer · 8 part types Husqvarna 130Chainsaw · 10 part types Husqvarna 135Chainsaw · 10 part types Husqvarna 135LTrimmer · 8 part types Husqvarna 240Chainsaw · 10 part types Husqvarna 323LTrimmer · 8 part types Husqvarna 435Chainsaw · 10 part types Husqvarna 440Chainsaw · 10 part types Husqvarna 445Chainsaw · 10 part types Husqvarna 450Chainsaw · 9 part types Husqvarna 455 RancherChainsaw · 8 part types Husqvarna 460 RancherChainsaw · 8 part types Husqvarna 525LTrimmer · 8 part types Husqvarna 525LSTrimmer · 8 part types Husqvarna 576 XPChainsaw · 10 part types Poulan Pro P3314Chainsaw · 10 part types Poulan Pro P3816Chainsaw · 10 part types Poulan Pro PP4218AChainsaw · 10 part types Poulan Pro PP4620AVChainsaw · 10 part types Stihl BG 55Blower · 6 part types Stihl BG 56 C-EBlower · 6 part types Stihl BG 86Blower · 6 part types Stihl BR 200Backpack Blower · 6 part types Stihl BR 350Backpack Blower · 5 part types Stihl BR 450Backpack Blower · 5 part types Stihl BR 500Backpack Blower · 8 part types Stihl BR 550Backpack Blower · 8 part types Stihl BR 600Backpack Blower · 8 part types Stihl FS 100 RTrimmer · 10 part types Stihl FS 110 RTrimmer · 10 part types Stihl FS 111 RTrimmer · 8 part types Stihl FS 130 RTrimmer · 10 part types Stihl FS 131 RTrimmer · 8 part types Stihl FS 38Trimmer · 8 part types Stihl FS 40Trimmer · 8 part types Stihl FS 45Trimmer · 8 part types Stihl FS 55Trimmer · 10 part types Stihl FS 85 RTrimmer · 8 part types Stihl FS 90 RTrimmer · 10 part types Stihl MS 170Chainsaw · 10 part types Stihl MS 180Chainsaw · 10 part types Stihl MS 192 TChainsaw · 10 part types Stihl MS 194 TChainsaw · 10 part types Stihl MS 201Chainsaw · 10 part types Stihl MS 210Chainsaw · 10 part types Stihl MS 211Chainsaw · 10 part types Stihl MS 230Chainsaw · 10 part types Stihl MS 250Chainsaw · 10 part types Stihl MS 251Chainsaw · 10 part types Stihl MS 261Chainsaw · 10 part types Stihl MS 271Chainsaw · 10 part types Stihl MS 291Chainsaw · 10 part types Stihl MS 311Chainsaw · 10 part types Stihl MS 361Chainsaw · 10 part types Stihl MS 362Chainsaw · 10 part types Stihl MS 391Chainsaw · 10 part types Stihl MS 400 C-MChainsaw · 10 part types Stihl MS 441Chainsaw · 10 part types Stihl MS 461Chainsaw · 10 part types Stihl MS 462 C-MChainsaw · 10 part types Stihl MS 500iChainsaw · 6 part types Stihl MS 660Chainsaw · 10 part types

Common Parts to Verify

Part Type	Model	OEM / Spec	Common Option	Confidence
Spark Plug	Briggs & Stratton 450e Series	491055S	Champion RC12YC	Medium
Spark Plug	Briggs & Stratton 500e Series	796112S	Champion RC12YC	Medium
Spark Plug	Briggs & Stratton 550ex Series	796112S	Champion RC12YC	Medium
Spark Plug	Briggs & Stratton 625ex Series	796112S	Champion RC12YC	Medium
Spark Plug	Briggs & Stratton 675ex Series	796112S	Champion RC12YC	Medium
Spark Plug	Briggs & Stratton 725EXi Series	796112S	Champion RC12YC	Medium
Spark Plug	Briggs & Stratton 850EXi Series	796112S	Champion RC12YC	Medium
Spark Plug	Echo CS-310	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo CS-330T	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo CS-352	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo CS-355T	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo CS-400	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo CS-440	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo CS-500P	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo CS-590 Timber Wolf	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo PB-250LN	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo PB-500	A425000000	NGK BPMR8Y	Medium
Spark Plug	Echo PB-580T	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo PB-770	15901019830	NGK BPM8Y	Medium
Spark Plug	Echo SRM-210	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo SRM-225	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo SRM-230	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo SRM-266	90023Y	Champion CJ8Y	Medium
Spark Plug	Echo SRM-280	90023Y	Champion CJ8Y	Medium

Before Buying

Match plug number, thread reach, seat style, resistor type, terminal style, and required gap.
Use the model page as the tie-breaker when the old plug disagrees with a generic listing.
A correct cross-reference can still be wrong if the gap or terminal cap style is different.