How do you read a spark plug code?
The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type.
What does the letters on a spark plug mean?
[YC] Firing End Design – The letters after the heat rating indicates a special spark plug construction feature called the firing end design. The letters refer to the center electrode material, projection dimension and ground material.
Is there a spark plug code?
The plug number is used to decode the spark plug and the stock number is used by our sales associates to aid in stock management, as alphanumeric numbers are harder to inventory. The stock number is a random 3-, 4- or 5-digit number and has no relation to heat range or plug type. An example is: DPR5EA-9; 2887.
How do you read a Bosch spark plug heat range?
How Do I Find a Colder or Hotter Plug?
- Bosch indicates the heat range in the middle of the plug number.
- Starting with part # FR6DC+ (heat range 6), a colder plug would be # FR5DC+ (heat range 5), a hotter plug would be # FR7DC+ (heat range 7).
How are the spark plugs numbered?
The terminals are numbered either clockwise or counterclockwise, depending on which engine you are working on. For example, on a Chevy, the No. 1 terminal is at approximately 5 o’clock, and the No. 2 terminal is to its left, then the No.
What is a plug number?
A plug number is a placeholder number which is used in an overall cost or budget estimate until a more accurate figure can be obtained.
Where is the heat range code indicated on a spark plug?
Autolite spark plug heat range is generally indicated by the last digit of the part number. Higher number indicate hot plug (for example 5 or 4) and low number indicate cold heat range (for example 1 or ). Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat.
What number spark plug is hotter?
The higher the number, the hotter the plug. The lower the number, the colder the plug. Starting with part # 24 (heat range 4), if you want a colder plug you would use part # 23 (heat range 3), for a hotter plug you would use part # 25 (heat range 5).
What is the difference between a BPR4ES and BPR5ES spark plug?
The difference between NGK BPR5ES and BPR4ES is their individual terminal type. The terminal of BPR5ES is a removable nut-style one, and the BPR4ES has a fixed and solid terminal. Therefore, the BPR5ES has to be screwed to mount in its place.
Can I use BPR5ES instead of BPR6ES?
BPR5ES gets hotter than BPR6ES. Using a BPR6ES in an engine designed for a BPR5ES can cause premature fouling and running a BPR5ES in an engine designed for a BPR6ES can cause an explosion.
How do you read a spark plug code with no number?
If there is no number at the end of the spark plug code, it should be gapped to .7 mm or .028″ unless specified differently by the vehicle manufacturer. Here is an example of the Nippon Denso basic spark plug code. The first letter of the ND spark plug code (in this case an “X”) indicates the thread size of the spark plug.
What do the letters in NGK spark plug codes mean?
Here is an example of their basic spark plug code. The first letter of the NGK spark plug code (in this case a “D”) indicates the thread size of the spark plug. There are three spark plug thread sizes currently being used in motorcycles and ATVs.
What does the X mean on a spark plug?
The first letter of the ND spark plug code (in this case an “X”) indicates the thread size of the spark plug. There are three size spark plug threads currently being used in motorcycles and ATVs. “W” indicates a 14 mm x 1.25 pitch size, “X” indicates a 12 mm x 1.25 size and “U” indicates a 10 mm x 1.0 size.
What do the spark plug codes on a motorcycle mean?
Here are the most common spark plug codes by brand. NGK is the largest manufacturer of spark plugs for motorcycles and ATVs in the world, and come as original equipment on many vehicles. Here is an example of their basic spark plug code. The first letter of the NGK spark plug code (in this case a “D”) indicates the thread size of the spark plug.