Select Your Ride

1
2
3

DENSO Iridium Spark Plug - IU27A 5366

Part Number: IU27A
DENSO
(No reviews yet) Write a Review
SKU:
IU27A
UPC:
042511053663
MPN:
5366
Condition:
New
Availability:
Ships Same Business Day
Weight:
0.31 LBS
  • DENSO Iridium Spark Plug - IU27A 5366
  • DENSO Iridium Spark Plug - IU27A 5366
$16.95
Prop 65 Warning Prop 65 Warning cancer & reproductive harm Price Match Call for more info on price match does not include 3rd party ads

Description

A quality spark plug is the foundation of reliable ignition—and the DENSO Iridium IU27A 5366 delivers the precision firing your engine demands. With iridium electrodes that withstand extreme heat and shrink to a fraction of conventional designs, these plugs reduce voltage requirements while maximizing combustion efficiency. Whether you're tuning a high-performance build or maintaining daily reliability, iridium technology gives you consistent spark performance across a wider operating range.

  • Iridium electrode material
  • Six times harder than platinum
  • Heat tolerance: 4,000°F maximum
  • Ultra-fine 0.4mm electrode
  • Reduced voltage requirement
  • 360° laser-welded electrode
  • Superior wear resistance
  • Tapered ground electrode
  • U-groove flame path
  • Extended service life
  • OEM DENSO quality
  • MPN: 5366
View AllClose

Specs

CENTER ELECTRODE PROJECTION:
NON-PROJECTED
CENTER ELECTRODE TYPE:
FINE WIRE
PRODUCT NAME:
SPARK PLUG
SPARK GAP IMPERIAL:
0.035'
STYLE:
IRIDIUM
TYPE:
RESISTOR
ELECTRICAL RESISTANCE:
5K OHMS
MODEL:
IU27A
UNITS:
EACH
ELECTRODE TIP MATERIAL:
IRIDIUM
GROUND ELECTRODE SHAPE:
ANGLED
HEAT RANGE:
27
HEX SIZE METRIC:
16 MM
RIDING STYLE:
STREET
SPARK GAP METRIC:
0.9 MM
TERMINAL CONFIGURATION:
THREADED STUD
THREAD REACH METRIC:
19.1 MM
View AllClose

0 Reviews

View AllClose

Fitment

Fitment for DENSO Iridium Spark Plug - IU27A 5366

View AllClose

FREE Shipping on orders of $99 or more!


Commercial Accounts

We offer tax-free commercial accounts, providing businesses with significant savings and streamlined benefits.



Easy 30-Day Returns

We proudly offer 30-day easy returns, ensuring a hassle-free and convenient shopping experience for our customers.


You May Also Like

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER