Bosch 96304 Spark Plug
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Bosch
 OE Fine Wire Double Iridium Pin-to-Pin

Bosch 96304 Spark Plug

Brand Bosch 96304
Center Electrode Core Material Nickel-Yttrium and Copper
Center Electrode Tip Material Iridium
Ground Configuration Standard
Ground Electrode Quantity 1
Ground Electrode Tip Design Pin-to-Pin
Ground Electrode Tip Material Platinum-Iridium and Nickel-Yttrium
Hex Size 16
Insulator Material Ceramic
Insulator Type Non-Projected
Manufacturer Heat Range 7
Outdoor Power Equipment Application No
Package Contents Spark Plug
Pre-Gap Size .8
Product Length 3.011024 in
Product Width 0.748031 in
Reach 19
Resistance 6000
Resistor Yes
Seat Type Flat
Short Style No
Spark Plug Type 4-Cycle
Thread Diameter 14
Product line OE Fine Wire Double Iridium Pin-to-Pin
Fits Toyota · 8 vehicles

OE fine wire design. Promotes efficient flame-kernel growth for stronger performance.

Double iridium technology. Uses two iridium-alloy electrodes for up to 4x longer life.

Iridium center electrode. Built for durable, high-performance ignition.

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Bosch OE Fine Wire Double Iridium Spark Plug

Bosch 96304 is an OE-style fine wire double iridium spark plug built for precise ignition performance and extended service life. It is a direct fit for select Toyota Prius C models from 2012-2019, with preset gap and a pin-to-pin electrode design.

OE Fine Wire Double Iridium Design

The Bosch OE Fine Wire Double Iridium Pin-to-Pin line uses iridium-alloy electrodes at both the firing pin and the ground electrode contact point. That construction supports efficient flame-kernel growth, stable spark delivery, and longer wear life than standard copper plugs. Bosch 96304 also features a 6000 ohm resistor, flat seat, 14 mm thread diameter, 19 mm reach, 16 mm hex, ceramic insulator, and a non-projected tip design.

  • Iridium center electrode for durable spark performance
  • Pin-to-pin ground electrode tip design for efficient ignition
  • Preset .8 gap; do not gap before installation
  • Resistor plug for modern ignition systems
  • OE-style construction for select 4-cycle applications

Vehicle Fitment

  • Fits 2012-2019 Toyota Prius C, N/A. Notes: Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium and Ground Electrode Pin Material is Platinum; OE Fine Wire Double Iridium Pin-to-Pin.

Common Replacement Reasons

  • Rough idle or inconsistent combustion
  • Hard starting or extended crank time
  • Misfire codes related to worn spark plugs
  • Reduced fuel economy from aged ignition components
  • Loss of throttle response under load

Installation Notes

Verify the preset gap before installation and do not adjust it. Confirm thread diameter, reach, seat type, and heat range against the original plug specification for the Toyota Prius C. Use proper torque procedures and inspect ignition coils and boots during service. Bosch 96304 is a direct replacement for the listed application.

Quality Assurance

Bosch engineers this spark plug to OE-level specifications with double iridium electrode technology for consistent ignition performance and long service life. This part cross-references Bosch 96304 for the same application.

Related reading

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2019ToyotaPrius C1.5LL4N/ADo Not Gap, Gap is Preset; Original Center Electrode Material is Iridium and Ground Electrode Pin Material is Platinum; OE Fine Wire Double Iridium Pin-to-Pin
2018ToyotaPrius C1.5LL4N/ADo Not Gap, Gap is Preset; Original Center Electrode Material is Iridium and Ground Electrode Pin Material is Platinum; OE Fine Wire Double Iridium Pin-to-Pin
2017ToyotaPrius C1.5LL4N/ADo Not Gap, Gap is Preset; Original Center Electrode Material is Iridium and Ground Electrode Pin Material is Platinum; OE Fine Wire Double Iridium Pin-to-Pin
2016ToyotaPrius C1.5LL4N/ADo Not Gap, Gap is Preset; Original Center Electrode Material is Iridium and Ground Electrode Pin Material is Platinum; OE Fine Wire Double Iridium Pin-to-Pin
2015ToyotaPrius C1.5LL4N/ADo Not Gap, Gap is Preset; Original Center Electrode Material is Iridium and Ground Electrode Pin Material is Platinum; OE Fine Wire Double Iridium Pin-to-Pin
2014ToyotaPrius C1.5LL4N/ADo Not Gap, Gap is Preset; Original Center Electrode Material is Iridium and Ground Electrode Pin Material is Platinum; OE Fine Wire Double Iridium Pin-to-Pin
2013ToyotaPrius C1.5LL4N/ADo Not Gap, Gap is Preset; Original Center Electrode Material is Iridium and Ground Electrode Pin Material is Platinum; OE Fine Wire Double Iridium Pin-to-Pin
2012ToyotaPrius C1.5LL4N/ADo Not Gap, Gap is Preset; Original Center Electrode Material is Iridium and Ground Electrode Pin Material is Platinum; OE Fine Wire Double Iridium Pin-to-Pin