OVERVIEW

Speed Logic stocks the NGK 96206 Laser Iridium spark plug for the BMW S58 and BMW B58 Gen 2 engines. It is a drop-in replacement suited to factory-stock cars and to tuned applications making power well past OEM levels, and it works with every common fuel setup — pump gas, E85 and methanol injection. NGK recommends this plug for upgraded hybrid turbo and single turbo builds as well.

The plug uses a fine-wire iridium center electrode with a platinum pad on the ground electrode for even wear in distributorless ignition systems. The laser-welded iridium tip is roughly six times harder than platinum, and a high-grade pure alumina ceramic insulator with a 98% pure copper core carries heat away from the firing end for reliable starts and resistance to overheating. NGK is the largest spark plug supplier in the world and develops plugs for OEM applications directly.

A note on sourcing: many sellers list similar NGK plugs at lower price points through marketplace channels. Unless the seller is an authorized NGK retailer, you may receive counterfeit plugs that do not behave the same way under load and boost as a genuine NGK plug. Counterfeits are common on eBay, Amazon, Walmart and similar channels, and we suggest avoiding those sources to protect your engine. Speed Logic only sells authentic NGK spark plugs.

SPECS

Type: NGK Laser Iridium
Heat range: 8
Center electrode: fine-wire iridium
Ground electrode: platinum pad for even wear in DIS ignition systems
Laser iridium tip is approximately six times harder than platinum
Gap: factory preset at 0.030"
Suggested gap for boosted applications: 0.024"
Pre-gapped plugs are offered by Speed Logic as an option
Socket size required: 14 mm 12-point (bi-hex)
Insulator: high-grade pure alumina ceramic with 98% pure copper core
Compatible with pump fuel, E85 and methanol injection setups
Suitable for stock, tuned, upgraded hybrid turbo and single turbo applications
Sold by the set, not individually: a set of six for B58 Gen 2 and S58 engines, or a set of four for B46/B48 engines

PARTS INCLUDED

Set of (6) NGK 96206 Laser Iridium spark plugs — for B58 Gen 2 and S58 engines
Set of (4) NGK 96206 Laser Iridium spark plugs — for B46/B48 engines
Quantity supplied depends on the variant selected. Pre-gapped plugs available on request.

TECH RESOURCES

Additional Parts Required

None. NGK specifies no additional hardware for these spark plugs; they are a direct drop-in replacement.
Installer-supplied tools: a 14 mm 12-point (bi-hex) spark plug socket, a torque wrench, and a feeler gauge if you intend to set the gap yourself.
Gapping tool required if you are closing the gap from the factory 0.030" preset to the suggested 0.024". Order the pre-gapped option if you would rather Speed Logic set them.

Installation

Torque these plugs to the BMW factory specification for your engine and always fit them with the engine cold. NGK does not publish a separate installation PDF for this part number.

Notes

This plug also covers BMW B58 Gen 2 (B58TU) applications and, in the four-plug set, B46/B48 engines. Thread size and reach are not published in this listing — confirm your specific model and required quantity with Speed Logic before ordering.

PART NUMBER

96206 — NGK stock number
SILZKGR8E8S — NGK plug number

VEHICLE APPLICATIONS

Make	Model	Chassis	Engine	Years
BMW	X3 M	F97	S58 3.0L Twin-Turbo I6	2020+
BMW	X4 M	F98	S58 3.0L Twin-Turbo I6	2020+
BMW	M3	G80	S58 3.0L Twin-Turbo I6	2021+
BMW	M3 Competition	G80	S58 3.0L Twin-Turbo I6	2021+
BMW	M3 Competition xDrive	G80	S58 3.0L Twin-Turbo I6	2021+
BMW	M4	G82	S58 3.0L Twin-Turbo I6	2021+
BMW	M4 Competition	G82	S58 3.0L Twin-Turbo I6	2021+
BMW	M4 Competition xDrive	G82	S58 3.0L Twin-Turbo I6	2021+
BMW	M4 Competition xDrive	G83	S58 3.0L Twin-Turbo I6	2021+
BMW	M2	G87	S58 3.0L Twin-Turbo I6	2023+
BMW	330i	G20	B48 2.0L Turbo I4 (Gen 2)	2019+
BMW	M340i	G20	B58 3.0L Turbo I6 (Gen 2)	2019+
BMW	430i	G22 / G23 / G26	B48 2.0L Turbo I4 (Gen 2)	2021+
BMW	M440i	G22 / G23 / G26	B58 3.0L Turbo I6 (Gen 2)	2021+
BMW	Z4 sDrive30i	G29	B48 2.0L Turbo I4 (Gen 2)	2019+
BMW	Z4 M40i	G29	B58 3.0L Turbo I6 (Gen 2)	2019+
BMW	230i	G42	B48 2.0L Turbo I4 (Gen 2)	2022+
BMW	M240i	G42	B58 3.0L Turbo I6 (Gen 2)	2022+
BMW	530i	G30	B48 2.0L Turbo I4 (Gen 2)	2021+
BMW	540i	G30	B58 3.0L Turbo I6 (Gen 2)	2021+
BMW	X5 xDrive40i	G05	B58 3.0L Turbo I6 (Gen 2)	2019+
BMW	X6 xDrive40i	G06	B58 3.0L Turbo I6 (Gen 2)	2020+
BMW	X7 xDrive40i	G07	B58 3.0L Turbo I6 (Gen 2)	2019+
BMW	X3 xDrive30i	G01	B48 2.0L Turbo I4 (Gen 2)	2022+
BMW	X3 M40i	G01	B58 3.0L Turbo I6 (Gen 2)	2022+
BMW	X4 xDrive30i	G02	B48 2.0L Turbo I4 (Gen 2)	2022+
BMW	X4 M40i	G02	B58 3.0L Turbo I6 (Gen 2)	2022+
BMW	740i	G11	B58 3.0L Turbo I6 (Gen 2)	2020+
BMW	745e	G11	B58 3.0L Turbo I6 (Gen 2, PHEV)	2020+
BMW	840i	G14 / G15 / G16	B58 3.0L Turbo I6 (Gen 2)	2019+