NGK Spark Plug 3686
NGK Spark Plug 3686

Spark Plug for 1996-2000 Dodge Caravan & More - NGK 3686

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$6.99
MPN: 3686
Item Package Quantity: 1
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NGK Spark Plug P/N:3686
NGK Spark Plug P/N:3686
$6.99

NGK 3686 spark plug for the 1996-2000 Dodge Caravan 4-cylinder 2.4L and other vehicles is among the NGK spark plugs that ignite the fuel mixture in the cylinder. Its V-Power design is intended for quicker starts and a smoother idle.

  • V-Power line with a V-cut nickel alloy center electrode and a concave ground electrode
  • Trivalent metal plating with anti-corrosion and anti-seizing properties
  • High grade alumina silicate ceramic insulator for dielectric performance
  • Solid copper core, 98% pure copper, for heat dissipation and conductivity across wide heat ranges
  • Cold-rolled threads that help prevent cross-threading and cylinder head damage

Quick facts

  • Part: NGK 3686 spark plug
  • Fits: 1996-2000 Dodge Caravan 4-cylinder 2.4L and other vehicles
  • Material: Copper
  • Condition: New

Hard starting, a rough idle or a misfire can mean the plug is worn, but a failing ignition coil or a dirty fuel injector can be behind them too, so trace the cause before you replace anything.

Fits

It is listed for a wide range of Dodge, Chrysler, Plymouth, Buick and Oldsmobile models, including the 1996-1997 Dodge Grand Caravan 4-cylinder 2.4L and the 1995-1997 Chrysler Cirrus 4-cylinder 2.4L. Open the Buyer's Guide tab to check your exact model and engine. This plug suits vehicles with OE nickel alloy plugs and is not recommended on vehicles with factory precious metal plugs.

Specifications

Fit and size

  • Thread size: M14 - 1.25
  • Thread reach: 0.750 in (19.0 mm)
  • Hex size: 5/8" (16mm)
  • Gap: .060 in (1.5 mm)
  • Seat type: Crush
  • Quantity per vehicle: varies by engine

Build and materials

  • Metallurgy: Copper
  • Center electrode: nickel alloy
  • Insulator: ceramic
  • Condition: New
  • NGK part number: FR45

In the box

One spark plug. The 1996-2000 Dodge Caravan 4-cylinder 2.4L takes four.

Interchange: FR45

This part cross-references / interchanges with the following part numbers:

41-608, 41-611, 41-630, FR3CLS6, FR3LS6, 7558, 7958, FR8DCY, FR8DCY+, 89C2, 5017, Q16PR-U15, 3686, FR45

Frequently Asked Questions

Is this the Dodge Grand Caravan spark plug for a 1996-1997 Grand Caravan 4-cylinder 2.4L?

Yes. NGK 3686 is listed for the 1996-1997 Dodge Grand Caravan 4-cylinder 2.4L, which takes four plugs. Other models are on the Buyer's Guide tab.

What thread and hex size does the NGK 3686 spark plug have?

The NGK 3686 has an M14 - 1.25 thread and a 5/8" (16mm) hex, with a crush seat and a thread reach of 0.750 in (19.0 mm).

Is the NGK 3686 sold as a single plug or as a set?

This listing is a single spark plug. The fitment lists four plugs for 4-cylinder 2.4L applications and eight for V8 5.0L ones, so order that many.

Can I put this plug in an engine that has factory precious metal plugs?

No. It is not recommended on vehicles with factory precious metal plugs. It is best for vehicles with OE nickel alloy plugs.

Is NGK FR45 the same plug as the 3686?

Yes. NGK lists this spark plug under both 3686 and FR45, so a search or cross-reference with either number points to it.

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