Denso 6011 Spark Plug

Denso 6011 U-Groove Spark Plug Overview

The Denso 6011 is a conventional spark plug built for consistent ignition performance in secondary ignition systems. Its U-Groove electrode design helps improve ignitability, supporting smoother combustion and efficient engine operation in applications such as BMW 12 12 1 272 128 cross-reference use.

Key Features

• U-Groove ground electrode tip design for improved spark exposure
• 5000 ohm resistor for noise suppression in ignition systems
• Copper center electrode core for stable heat transfer
• Nickel center and ground electrode tip materials for conventional durability
• Standard ground configuration with a single ground electrode
• 14 mm thread diameter, 19.00 mm reach, and flat seat design
• 0.8 pre-gap size and manufacturer heat range 14
• Compatible with BMW applications that use Denso 6011 / W14EPR-U specifications

Product Details

Built under Denso’s U-Groove Conventional line, this spark plug focuses on dependable ignition performance with a design that exposes more of the spark kernel to the air-fuel mixture. The nickel U-groove ground electrode, copper core center electrode, and 5000 ohm resistance work together to support steady firing characteristics and reduced electrical interference. The Denso 6011 is a practical OE-style choice for BMW ignition service where the specified plug dimensions and heat range match the vehicle requirement.

This part cross-references BMW 12 12 1 272 128 and Denso Auto Parts W14EPR-U for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from weak or inconsistent spark delivery
• Misfire conditions related to degraded secondary ignition components
• Reduced fuel efficiency from incomplete combustion
• Loss of throttle response under load

Installation Notes

Verify thread diameter, reach, seat type, and heat range before installation. The Denso 6011 uses a 14 mm thread, 19.00 mm reach, flat seat, and 0.8 pre-gap size, so it should be matched to the engine specification before service. For BMW spark plug replacement, confirm the vehicle’s ignition system requirements and inspect coil boots, plug wells, and threads during service.

Quality Assurance

Denso’s U-Groove Conventional spark plug line is engineered around ignition consistency and OE-style fitment standards. The 6011 is built with nickel and copper electrode materials and a resistor design suited for controlled spark performance in properly matched applications.