TOYOTA GENUINE SK20HR-A11 SPARK PLUG (4PCS)

Description

TOYOTA GENUINE SK20HR-A11 SPARK PLUG (4PCS) – Premium Ignition Protection for Heavy-Duty JDM Powertrains

For SUV owners, premium microbus operators, and cross-country drivers who refuse to compromise on engine safety, raw low-end torque, and consistent fuel economy, the TOYOTA GENUINE SK20HR-A11 SPARK PLUG (4PCS) provides professional-grade ignition mechanics. Manufactured by Denso as a factory benchmark for Toyota, the Iridium Long Life Series is structurally optimized to manage extended replacement cycles while completely eliminating ignition misfire paths. Featuring a high-density 0.7mm Iridium center electrode and a specialized Platinum-tipped ground electrode, it safely isolates combustion stress, maintaining structural protection across extreme urban grids or demanding highway conditions.

Key Features of TOYOTA GENUINE SK20HR-A11 SPARK PLUG (4PCS):

• Iridium-Platinum Core Mechanics: Formulated with a highly durable Iridium center tip and a target Platinum ground patch to lower required firing voltage limits and eliminate spark gap erosion under high thermal stress.
• 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.
• Deep-Reach Thermal Resistance: Engineered with a specialized 26.5mm long-reach thread structure to optimize heat dissipation away from high-compression combustion chambers.
• Anti-Seize Machine Threads: Finished with a protective zinc-nickel outer shell coating that blocks cylinder head rust, prevents thread seizure, and secures easy removal cycles.

Why Choose TOYOTA GENUINE SK20HR-A11 SPARK PLUG (4PCS)?

The dense traffic gridlocks and dusty driving climate across Bangladesh put serious thermal stress on your engine’s combustion chamber, especially in heavy chassis platforms like SUVs and passenger haulers. Standard copper or basic plugs can foul early or cause mild engine knocking when your vehicle works at peak operating thresholds. The TOYOTA GENUINE SK20HR-A11 SPARK PLUG (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: TOYOTA GENUINE SK20HR-A11 SPARK PLUG (4PCS)
• Part Number: SK20HR-A11 (Denso Stock No. 3421)
• OEM Part Number: 90919-01247
• Thread Diameter: 14mm
• Thread Reach: 26.5mm
• Hex Size: 16mm (5/8 inch)
• Pre-Set Gap: 1.1mm
• 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 16mm spark plug socket.
6. Hand-thread the new TOYOTA GENUINE SK20HR-A11 SPARK PLUG (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:

• Toyota Factory OEM: 90919-01247 / 90919-T1005
• Denso Series: SK20HR-A11 / IK20HR11 / IKH20 / IKH20TT
• NGK Series: ILFR6T11 / Stock No. 4904 (Laser Iridium Edition) / LFR6AIX-11 (Iridium IX)
• HKS Super Fire Racing: 50003-M35iL (M-Series Long Reach Performance ISO Type)

Note: Fitment depends entirely on your engine spec. This list covers the most common market models, but it also fits various other Toyota/Lexus V6 and high-compression inline-4 engines. Please check your manual or share your chassis code with us to confirm fitment before ordering.

Maintenance Tip from Oil House Bangladesh:

High-utilization utility engines and dual VVT-i platforms operating with extended chassis weight require precise, clean voltage parameters to complete flame propagation inside the cylinder with zero lag. The intense stop-and-go idling profiles, high humidity, and fuel quality variances found within Bangladesh prompt premature carbon scaling on the plug tips. To protect your heavy-duty ignition coils from early burnout and secure maximum fuel mileage parameters, we highly recommend replacing your TOYOTA GENUINE SK20HR-A11 SPARK PLUG (4PCS) every 80,000 km to 100,000 km when utilizing premium full-octane fuel. Always check that the internal spark plug tube wells are dry and free from any motor oil leaks before locking the new units down.