Champion
Copper Plus

Champion 434 Spark Plug

Brand Champion 434
Center Electrode Diameter (Inch) 0.1
Center Electrode Tip Material Nickel
Classification Champion Copper Plus
Electrical Terminal Type Non-Removable Nut
Ground Electrode Core Material Nickel
Ground Electrode Material Nickel Copper Alloy
Ground Electrode Quantity 1
Hex Size 0.625
Hex Size 15.880
Hex Type Hex
Installed Height (Inch) 1.99
Insulator Height 0.12
Insulator Projection (Inch) 0.12
Manufacturer Heat Range 9
Plug Type RC9MC4
Pre-Gap Size 0.045
Pre-Gap Size 1.14
Reach 0.75
Resistor Type Yes
Seat Type Flat
Taper Diameter (Inch) 0.25
Thread Diameter 0.551
Thread Diameter 14.000
Product line Copper Plus
Fits Kawasaki, Scion, Subaru, Toyota, Chevrolet, BMW, Pontiac, Mitsubishi, Suzuki, Acura, Honda, Porsche, Lexus, Volkswagen, Dodge, Ford, and Mazda · 154 vehicles

Copper core electrode. Improves conductivity and heat control for steady wear.

Resistor type. Helps reduce electrical noise in the ignition system.

Champion Copper Plus. Dependable performance from Champion's spark plug line.

Cross-references AMS Automotive 4434, Anchor 8894 and Karlyn 784 for the same application. See all 12.

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Champion Copper Plus 434 Spark Plug

Champion Copper Plus 434 is a replacement spark plug built for dependable ignition performance and stable heat control. Its copper core electrode helps improve conductivity, while the nickel center and ground electrode materials support consistent wear for everyday driving.

Compatible With applications such as 2001-2005 Honda Civic, 2004-2006 Toyota Camry, and 2003-2010 Pontiac Vibe, this plug is a direct-fit option for a wide range of import and domestic vehicles. The Champion 434 spark plug is also cross-referenced with AMS Automotive 4434 for the same application.

Key Features

  • Copper core electrode for improved conductivity and heat control
  • Nickel center electrode tip and nickel ground electrode core material
  • Resistor design for reduced electrical noise
  • Flat seat construction
  • Pre-gapped at 0.045 in. / 1.14 mm
  • 14 mm thread diameter, 0.75 in. reach, 15.88 mm hex size
  • Champion Copper Plus line for OE-style replacement service

Product Details

The Champion Copper Plus line focuses on practical, everyday ignition service with a copper core design that supports conductivity and heat transfer. Part number 434 uses a nickel-based electrode setup, a non-removable nut terminal, and a resistor configuration to help maintain steady spark delivery in the secondary ignition system. The RC9MC4 plug type and flat seat design make it a fitment-specific replacement for many vehicles that call for this specification, including Honda Civic, Toyota Camry, and Pontiac Vibe applications.

Common Uses

  • Restoring weak or inconsistent spark
  • Addressing rough idle caused by worn plugs
  • Correcting hard starting from aged ignition components
  • Replacing fouled plugs during scheduled tune-up service
  • Maintaining proper combustion in high-mileage engines

Installation Notes

  • Verify the required plug type, thread diameter, reach, seat type, and heat range before installation.
  • Confirm the specified gap for the vehicle application; listed fitments include gaps from 0.040 in. to 0.044 in.
  • Use the vehicle service manual for torque and tightening procedure.
  • Inspect ignition wires or coil-on-plug components during spark plug replacement.
  • Check the old plug for signs of oil, coolant, or fuel fouling to help diagnose engine issues.

Quality Assurance

Champion designs the Copper Plus series for dependable replacement service with materials selected for conductivity, heat control, and wear consistency. Part number 434 is built to match the listed OE-style applications and fitment requirements across supported vehicles.

This part fits 154 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2012ScionxB—2.4LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2012SubaruLegacy—2.5LH4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2012SubaruOutback—2.5LH4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2012ToyotaCorolla—2.4LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2011ChevroletAveo—1.6LL4—N/AGap 0.040 (in); Plug Type Number RC9MC4; Copper Plus
2011ChevroletAveo5—1.6LL4—N/AOE Type; Gap 0.040 (in); Plug Type Number RC9MC4; Copper Plus
2011ScionxB—2.4LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2011SubaruLegacy—2.5LH4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2011SubaruOutback—2.5LH4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2011ToyotaCorolla—2.4LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2010BMW550i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2010BMW650i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2010BMWX5—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2010ChevroletAveo—1.6LL4—N/AGap 0.040 (in); Plug Type Number RC9MC4; Copper Plus
2010ChevroletAveo5—1.6LL4—N/AOE Type; Gap 0.040 (in); Plug Type Number RC9MC4; Copper Plus
2010PontiacG3—1.6LL4—N/AGap 0.042 (in); Plug Type Number RC9MC4; Copper Plus
2010PontiacVibe—2.4LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2010ScionxB—2.4LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2010SubaruOutback—2.5LH4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2010ToyotaCorolla—2.4LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2010ToyotaHighlander—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2009BMW550i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2009BMW650i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2009BMWX5—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2009ChevroletAveo—1.6LL4—N/AGap 0.040 (in); Plug Type Number RC9MC4; Copper Plus
2009ChevroletAveo5—1.6LL4—N/AOE Type; Gap 0.040 (in); Plug Type Number RC9MC4; Copper Plus
2009MitsubishiRaider—3.7LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2009PontiacG3—1.6LL4—N/AGap 0.042 (in); Plug Type Number RC9MC4; Copper Plus
2009PontiacVibe—2.4LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2009ScionxB—2.4LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2009SuzukiSwift+—1.6LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2009Toyota4Runner—4.7LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2009ToyotaCorolla—2.4LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2009ToyotaHighlander—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2008BMW550i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2008BMW650i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2008BMW750i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2008BMW750Li—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2008BMWX5—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2008MitsubishiRaider—3.7LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2008PontiacVibe—1.8LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2008ScionxB—2.4LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2008Toyota4Runner—4.7LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2008ToyotaHighlander—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2007BMW550i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2007BMW650i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2007BMW750i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2007BMW750Li—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2007BMWX5—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2007MitsubishiRaider—3.7LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2007PontiacVibe—1.8LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2007Toyota4Runner—4.7LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2007ToyotaHighlander—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2006BMW550i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2006BMW650i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2006BMW750i—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2006BMW750Li—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2006BMWX5—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2006MitsubishiRaider—3.7LV6—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2006PontiacVibe—1.8LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2006Toyota4Runner—4.7LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2006ToyotaCamry—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2006ToyotaHighlander—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2005AcuraEL—1.7LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2005BMWX5—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2005HondaCivic—1.7LL4GASN/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2005PontiacVibe—1.8LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2005Porsche911—3.6LH6—N/AOE Type; Gap 0.040 (in); Plug Type Number RC9MC4; Copper Plus
2005Toyota4Runner—4.7LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2005ToyotaCamry—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2005ToyotaHighlander—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2004AcuraEL—1.7LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2004BMWX5—4.8LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2004HondaCivic—1.7LL4GASN/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2004PontiacVibe—1.8LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2004Porsche911—3.6LH6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2004Toyota4Runner—4.7LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2004ToyotaCamry—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2004ToyotaHighlander—3.3LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2003AcuraEL—1.7LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2003HondaCivic—1.7LL4GASN/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2003LexusES300—3.0LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2003PontiacVibe—1.8LL4—N/AGap 0.043 (in); Plug Type Number RC9MC4; Copper Plus
2003Toyota4Runner—4.7LV8—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2002AcuraEL—1.7LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2002HondaCivic—1.7LL4GASN/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2002LexusES300—3.0LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2001AcuraEL—1.7LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2001HondaCivic—1.7LL4GASN/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2001HondaPrelude—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2001LexusES300—3.0LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2001VolkswagenJetta—2.0LL4—N/AOE Type; Gap 0.040 (in); Plug Type Number RC9MC4; Copper Plus
2000HondaPrelude—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
2000LexusES300—3.0LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1999HondaPrelude—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1999LexusES300—3.0LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1999ToyotaCelica—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1998HondaPrelude—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1998ToyotaCelica—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1998ToyotaSupra—3.0LL6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1997HondaPrelude—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1997ToyotaCelica—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1997ToyotaSupra—3.0LL6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1996HondaPrelude—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1996HondaPrelude—2.3LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1996ToyotaCelica—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1996ToyotaSupra—3.0LL6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1995DodgeRam 2500—8.0LV10—N/AGap 0.044 (in); Actual OE Part; Plug Type Number RC9MC4; Copper Plus
1995DodgeRam 3500—8.0LV10—N/AGap 0.044 (in); Actual OE Part; Plug Type Number RC9MC4; Copper Plus
1995HondaPrelude—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1995HondaPrelude—2.3LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1995LexusES300—3.0LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1995ToyotaCelica—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1995ToyotaMR2—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1995ToyotaSupra—3.0LL6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1994DodgeRam 2500—8.0LV10—N/AGap 0.044 (in); Actual OE Part; Plug Type Number RC9MC4; Copper Plus
1994DodgeRam 3500—8.0LV10—N/AGap 0.044 (in); Actual OE Part; Plug Type Number RC9MC4; Copper Plus
1994HondaPrelude—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1994HondaPreludeSi2.3LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1994LexusES300—3.0LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1994ToyotaCelica—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1994ToyotaMR2—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1994ToyotaSupra—3.0LL6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1993HondaPrelude—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1993HondaPreludeSi2.3LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1993LexusES300—3.0LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1993ToyotaCelica—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1993ToyotaMR2—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1993ToyotaSupra—3.0LL6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1992FordProbe—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1992HondaPrelude—2.3LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1992LexusES300—3.0LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1992MazdaMX-6—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1992ToyotaCelica—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1992ToyotaMR2—2.2LL4—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1991FordProbe—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1991Mazda929—3.0LV6—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1991MazdaMX-6—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1991ToyotaCamry—2.5LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1991ToyotaCelica—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1991ToyotaMR2—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1990FordProbe—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1990Mazda929—3.0LV6—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1990MazdaMX-6—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1990ToyotaCamry—2.5LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1989FordProbe—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1989Mazda929—3.0LV6—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1989MazdaMPV—2.6LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1989MazdaMPV—3.0LV6—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1989MazdaMX-6—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1989ToyotaCamry—2.5LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1988Mazda929—3.0LV6—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1988MazdaMX-6—2.2LL4—N/AOE Type; Gap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
1988ToyotaCamry—2.5LV6—N/AGap 0.044 (in); Plug Type Number RC9MC4; Copper Plus
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4434Anchor — 8894Karlyn — 784486446556027108FR5LDCRC9MC4Z158ZFR6F11ZFR6F11GZFR6VGZFR7F