Ignition Coil + Iridium Spark Plugs for BMW 7 Series (1993-1995) 4.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 1993-1995 BMW 7 Series 4.0L (E32/E38 M60B40)

What it Does: The ignition coil and iridium spark plug kit replaces aged factory ignition components on the 1993-1995 BMW 7 Series 4.0L to eliminate cylinder misfires, restore clean combustion, and stabilize idle quality.

The Stock BMW 7 Series Ignition Coil Breakdown

In the M60B40 V8, deep spark plug galleys expose ignition coils to persistent thermal cycling and valve cover oil seepage. Over decades, factory internal epoxy potting degrades, resulting in dielectric breakdown and micro-arcing within the secondary coil windings. This voltage leakage manifests as intermittent misfires under load, unburnt hydrocarbon accumulation, and premature catalytic converter degradation. Concurrently, traditional worn spark plugs develop enlarged gaps that demand excessive secondary voltage from already fatigued ignition coils.

The Engineering Solution

This service kit resolves weak spark output by pairing high-dielectric replacement coil-on-plug packs with fine-wire iridium spark plugs. The ignition coils feature reinforced thermoplastic housings and heat-resistant internal windings engineered to match factory dwell times and primary resistance specs. Matching these with laser-welded iridium electrode spark plugs lowers the required arc initiation voltage, preserving coil insulation while establishing consistent flame kernel growth across all eight cylinders under hard acceleration.

Technical Specifications

Compatibility

• 1993-1994 BMW 740i (E32) 4.0L V8
• 1993-1994 BMW 740iL (E32) 4.0L V8
• 1995 BMW 740i (E38) 4.0L V8
• 1995 BMW 740iL (E38) 4.0L V8

Frequently Asked Questions

Does this fit the E32 and E38 7 Series?
Yes, this is a direct fit for the 1993-1995 BMW 7 Series equipped with the M60B40 engine.

What is the recommended installation torque for these spark plugs?
Torque the iridium spark plugs dry to 25 to 30 Nm (18 to 22 lb-ft) to ensure an airtight combustion seal without stripping the aluminum cylinder head threads.

The BMW Precision Caliber

Engineered to satisfy precise German DME tolerances, this direct-fit ignition system restores balanced cylinder pressure and prevents erratic timing pull or check-engine light illumination across high-speed autobahn runs.