HONDA OEM SPARK PLUG 12290-R1A-H01 (4PCS)

Description

HONDA OEM 12290-R1A-H01 – Ultimate Ignition Protection for i-VTEC JDM Engines

For premium Japanese sedan and SUV owners who refuse to compromise on combustion safety, smooth idling lines, and consistent fuel economy, the HONDA OEM SPARK PLUG 12290-R1A-H01 (4PCS) provides professional-grade ignition mechanics. Manufactured to Honda’s precise factory benchmark specifications, this premium Laser Iridium sequence completely eliminates ignition misfire paths and limits high-voltage stress. Featuring an ultra-fine Iridium center core paired with a Platinum earthed ground tip, it ensures seamless flame propagation inside the cylinder across intense urban traffic profiles or fast highway tracking zones.

Key Features of HONDA OEM SPARK PLUG 12290-R1A-H01 (4PCS):

• Laser Iridium-Platinum Metallurgy: Engineered with a highly focused Iridium center tip and a target Platinum ground patch to maximize spark intensity while stopping gap expansion over long operating periods.
• Extended Service Capacity: Laboratory tested to provide continuous, dependable ignition protection for up to 100,000 km of reliable operational cycles under heavy driving strain.
• Ultra-Narrow Long-Reach Sizing: Features an advanced 12mm thread diameter with a 26.5mm deep reach and a narrow 14mm hex projection, custom-built for space-efficient modern Honda cylinder heads.
• Anti-Corrosive Machine Threads: Coated with a protective outer shell barrier that blocks cylinder head rust, prevents thread binding, and ensures seamless extraction cycles.

Why Choose HONDA OEM SPARK PLUG 12290-R1A-H01 (4PCS)?

The dense traffic gridlocks and dusty driving climate across Bangladesh put serious thermal stress on your engine’s combustion chamber. Standard basic plugs can foul early or cause mild engine knocking when your vehicle works at peak operating thresholds. The HONDA OEM SPARK PLUG 12290-R1A-H01 (4PCS) available at Oil House Bangladesh acts as premium insurance for your engine, keeping your internal combustion cool, silent, and flawlessly responsive.

Technical Specifications:

• Product Name: HONDA OEM SPARK PLUG 12290-R1A-H01 (4PCS)
• OEM Part Number: 12290-R1A-H01 (Interchanges with 12290-R1A-A01)
• Thread Diameter: 12mm
• Thread Reach: 26.5mm
• Hex Size: 14mm (Ultra-Narrow)
• Pre-Set Gap: 1.1mm
• Core Material: Laser Iridium / Platinum Ground Tip
• Package Quantity: 4 Pieces (Matched Set)

Application Instructions

1. Shut off the vehicle engine on level ground and let it cool down entirely.
2. Carefully detach the engine plastic top cover and disconnect the ignition coil wiring harness clips.
3. Extract the holding bolt and pull the individual ignition coils straight out from the spark plug tubes.
4. Blow out any trapped dust or debris from inside the plug wells using compressed air before removing old units.
5. Loosen and extract the old spark plugs counter-clockwise using a proper magnetic 14mm spark plug socket (do not use a standard 16mm socket).
6. Hand-thread the new HONDA OEM SPARK PLUG 12290-R1A-H01 (4PCS) plug clockwise to prevent cross-threading, then torque to exactly 15–22 Nm (do not over-tighten).
7. Reinstall the ignition coils, torque the mounting bolts, reconnect the harness clips, start the vehicle, and check for a smooth idle line.

Vehicle Applications:

Alternative Interchanges (Cross Reference):

This premium high-performance ignition component replaces and maps with the following target specifications:

• Honda Factory OEM: 12290-R1A-H01 / 12290-R1A-A01
• Denso Series: DXU22HCR11S / VXUHC22G
• NGK Series: SILZKR7C11S / Stock No. 92932 (Original Laser Iridium Production Design)
• HKS Super Fire Racing: 50003-M35XL (M-Series Performance Heavy-Duty 14mm Hex Long Reach)

Note: Fitment depends entirely on your engine spec. This list covers the most common market models, but it also fits various other Honda i-VTEC blocks. Please check your manual or share your chassis code with us to confirm fitment before ordering.

Maintenance Tip from Oil House Bangladesh:

Honda i-VTEC setups manage valve lift timings precisely, which demands clean, sharp ignition spark parameters to prevent unburnt fuel loading in low-speed idling conditions. The severe urban congestion, heavy humidity, and fuel quality variances found within Bangladesh accelerate carbon scaling directly on the spark gap tips. To prevent early ignition coil burnout and preserve smooth factory acceleration performance, we highly recommend replacing your HONDA OEM SPARK PLUG 12290-R1A-H01 (4PCS) every 80,000 km to 100,000 km using premium high-octane fuel. Always check that your plug tube wells are completely dry and free from engine oil leakage before locking the new units down.