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Autolite Platinum Spark Plug: Enhanced Durability & Fuel Efficiency

(1003 reviews)
Part # AP104
4 yr replacement if defective
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Product Information

Product Details
Part No. AP104
Warranty Details (4 YR REPLACEMENT IF DEFECTIVE)
Autolite Platinum spark plugs are crafted for exceptional performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, and enhanced acceleration while boosting fuel efficiency. The platinum firing tip prevents gap erosion, extending the service life, while the high alumina ceramic insulator offers superior thermal conductivity and insulation for added strength. A multi-rib insulator design prevents flash-over, ensuring reliable operation, and the nickel-plated shell resists corrosion for long-lasting durability. With a mid-projection standard center electrode and a tapered seat type, these performance-grade spark plugs deliver consistent results. The combination of platinum and nickel materials in the electrode tips further enhances reliability, making them a smart choice for drivers seeking improved engine efficiency and extended part longevity.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Incorporates a mid-projection standard center electrode design to ensure consistent performance and reliable ignition in a variety of engine conditions.
Specifications
Center Electrode Core Material:
Copper

Center Electrode Design:
Standard

Center Electrode Projection:
Mid Projection

Center Electrode Tip Material:
Platinum

Electrical Terminal Type:
Non-Removable Nut

Electrode Tip Material:
Platinum

Grade Type:
Performance

Ground Electrode Core Material:
Nickel

Ground Electrode Quantity:
1

Ground Electrode Tip Design:
Standard

Ground Electrode Tip Material:
Nickel

Hex Size:
5/8 in

Hex Type:
Hex

Indexed:
No

Insulator Material:
Ceramic

Manufacturer Heat Range:
9

Pre-Gap Size:
0.05 in

Reach:
0.679 in

Resistor:
Suppressor

Resistor Type:
Yes

Seat Type:
Tapered

Skirt:
Yes

Thread Diameter:
14 mm

Tip Configuration:
Power

Washer(s) Included:
No

Wrench Diameter:
5/8 in
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4.59 out of 5
1003 Customer Reviews
84% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
786
4 Stars
131
3 Stars
25
2 Stars
15
1 Star
46
Pros
85
Improves Engine Efficiency
68
Easy To Install
53
Increases Power
50
Durable
24
(null)
Cons
849
No
45
(null)
12
Yes
12
No Improvement In Performance
6
Decreases Gas Mileage
Most Liked Positive Review
I am never let down by Autolite........
I would just like to say, that I use Autolite spark plugs in all my vehicles. I am never surprised by their performance, and durability. I would definately recomend, Autolite plugs, to all who read this comment. I initially tried these plugs, for price, and found out that they are durable and dependable as well.
Most Liked Negative Review
AVOID THESE FOR TOYOTA AND SIMILAR
In cars like Toyota which use one coil with two cylinders and "lost spark", AL single platinums quickly deteriorate and effectively become useless. The OBD will show a misfire code for a pair of cylinders first. The plugs are at that point unusable and good for the trash bin. I have read that some Fords show a similar result. If you want an inexpensive plug, buy simple standard copper core plugs - they will not last as long as the best but will not give you the headaches that the AL single platinums probably will.
Reviewed by 1003 Customers
spark plugs
Verified Buyer -
good product at a good price
Bottom Line Yes, I would recommend to a friend
Good plug
Verified Buyer -
Autolite has allways run good for me
Bottom Line Yes, I would recommend to a friend
very good
Verified Buyer -
great replacement product
Bottom Line Yes, I would recommend to a friend
EXCELLENT GOOD PRODUCT
Verified Buyer -
none
Bottom Line Yes, I would recommend to a friend
I am never let down by Autolite........
Verified Buyer -
I would just like to say, that I use Autolite spark plugs in all my vehicles. I am never surprised by their performance, and durability. I would definately recomend, Autolite plugs, to all who read this comment. I initially tried these plugs, for price, and found out that they are durable and dependable as well.
Bottom Line Yes, I would recommend to a friend
Displaying Reviews 1 - 5Back to Top
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