2016–2023 Mercedes-Benz Metris
By Tom Becker ✓ Certified Mechanic · Published Sep 21, 2026 · Updated Oct 22, 2026
Save $335 by doing it yourself! Shop cost: $450
Quick answer: Spark Plug Replacement on a 2016–2023 Mercedes-Benz Metris is rated Advanced and takes about 1-3 hours. You'll need 4 tools for this job, and parts cost about $115. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Correct spark plug set for the gasoline/ICE engine in 2016-2023 Mercedes-Benz Metris; verify engine, heat range, gap, and VIN fitment | — | $115.00 | |
| Coil-boot seals or ignition coils only if inspection finds damage Optional | — | $35.00 |
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Confirm the 2.0L turbo (M274): OE plug is the NGK Laser Iridium SILZKFR8H7S (stock #92725) — specially indexed, factory-gapped at 0.028 inches (0.7mm), 14mm hex, 45,000-mile interval. Don't substitute a generic plug; buy four. Scan for misfires first.
Let the 2.0L cool fully. The van bay is tight — remove the engine cover (front clips) and any ducting blocking the coils. Use a 14mm thin-wall swivel-head socket. Disconnect the negative cable only if your procedure calls for it.
Release each coil's locking tab, remove its bolt, and pull the coil up. The OE plug is indexed — keep each coil matched to its cylinder. Blow the wells clean before loosening a plug, and use the correct bit on the small hold-down bolts.
I tell every DIYer this: Indexed plugs are why the coils stay matched to their cylinders — mix them up and the engine runs, just badly enough to drive you crazy chasing it.
Remove each old plug with the 14mm thin-wall socket, keeping it straight. Install the new SILZKFR8H7S plugs from the box — never re-gap an indexed plug, no anti-seize on coated threads. Hand-start each plug, then tighten to spec; never use an impact.
Those M12 threads demand patience — I turn each plug backward half a turn until I feel it click into the thread start, then tighten. Rush it and you'll cross-thread the head.
Grease inside coil boots only; reseat the coils on the cylinders, snug the hold-downs, and reconnect each connector. Refit the ducting and cover, reconnect the battery if removed, and start up. Smooth idle, no check-engine light — a short drive settles a hunting idle.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
2016–2023
2016–2023
2016–2023
2016–2023
2016–2023
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