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Glow Plug Terminal Nuts, Set of 8, Duramax | 2001-2016

Merchant Automotive

$4.99
SKU:
10251
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This set of 8 replacement glow plug terminal nuts secures the glow plug wiring to the terminal on each glow plug. New ACDelco glow plugs for the LLY, LBZ, LMM and LML Duramax do not come with terminal nuts, so you'll need a set to finish the job. The old nuts are small, easy to drop into the engine valley, and often corroded or seized after years of heat. These M4 x 0.7 serrated flange nuts grip the terminal to keep the connection tight. They fit 2001-2016 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks with the 6.6L Duramax (LB7, LLY, LBZ, LMM and LML) and 2006-2016 Chevy Express and GMC Savana vans with the 6.6L Duramax (LLY, LMM and LGH).

Features

  • Set of 8, one for every glow plug
  • M4 x 0.7 thread
  • Serrated flange resists loosening from heat and vibration
  • Needed for new ACDelco 63G and 9G glow plugs, which don't include nuts

What's Included

  • (8) M4 x 0.7 serrated flange glow plug terminal nuts

Before You Order

  • LLY, LBZ, LMM, LML and LGH: new ACDelco glow plugs for these engines (63G and 9G) do not include nuts.
  • Not for L5P, 2.8L or 3.0L. Those glow plugs use a pin terminal instead of a threaded terminal nut.
  • LB7: new ACDelco 62G glow plugs already come with nuts. This set works as spares.

Installation Tips

  • The nuts are small and easy to drop into the engine valley. Keep a spare set on hand.
  • Check the ring terminals and wiring for corrosion while you have the nuts off.
  • Use the right removal tools to reduce the chance of breaking off a glow plug. See the Glow Plug Removal Tool Adapter and Socket or the complete Glow Plug Removal Tool Kit.

Installation Resources

Related Parts

Frequently Asked Questions

Do new glow plugs come with nuts?
New ACDelco glow plugs for the LLY, LBZ, LMM and LML do not include terminal nuts, so order this set with your glow plugs. New LB7 glow plugs already come with nuts.

What size are the nuts?
They are M4 x 0.7 serrated flange nuts.

Can I reuse my old nuts?
You can if they're in good shape, but old nuts are often corroded or seized from engine heat, and they're easy to lose during the job.

How many do I need?
One per glow plug. This set of 8 covers every cylinder on a 6.6L Duramax.

For warranty information, see our Warranty Policy.

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