NGK Spark Plug p/n D8HA # 45 NOS 12 x 12.7 mm Honda 250 305 CL77 CB77 CL72 CB72
Fits 1962-1969 Honda 250 305 CL77 CB77 CL72 CB72 also fits 1979-1981 Honda ATC 110, Verified in our NGK parts Manual, will no doubt fit other makes and models.
This is how this NGK Plug part number (D8HA) breaks down: D=12 mm thread diameter, 8 designates how hot the plug is, H=12.7 mm or 1/2" plug reach A = special design
NGK stock number 7112
What do the NGK PLUG part numbers mean? The first letter designates the Thread Diameter A=18mm, B=14 mm, C=10mm, D=12mm and J=12mm.
The next three letters designate Construction (may be combined) C=5/8" hex size, K=Hex size 5/8" Projected Tip(ISO), M= Compact Type, P= Projected Insulator, R=Resistor type, U=surface discharge, Z=Inductive resistor.
Next is the Number, it designates Hot to Cold =2 being a hot plug and 11 being the coldest.
Next number is the thread reach E=19 mm or 3/4", EF=tapered seat 17.5 mm or .708" reach, H=12.7 mm or 1/2",EH=Partial thread 19mm (3/4" total reach) &12.7mm (1/2"total thread), L=11.2 mm or 7/16", S=9.5 mm or 3/8" reach.
The next set of Numbers designates the Firing end construction: Letters run from A to Z. A and B= special design, C=low angle ground electrode, CM=Compact low angle ground electrode, E=V-grooved center (14mm only) 1.5 mm insulator, F=Tapered seat, G=fine wire nickel alloy center electrode, GV=Gold palladium for Racing, K=2 ground electrodes, L=Half heat range, LM= compact type for lawn mower, M=2 ground electrode for Mazda rotary engine, N=special side electrode, P=premium Platinum,
Q=4-ground electrode, R=special ground electrode, S=standard 2.5mmo center electrode, T=3 ground electrode, U=semi-surface discharge, V=Fine Wire Gold palladium Center electrode, VX=high performance, W= Tungsten Electrode, X=booster gap,
Y=V-grooved center electrode (14mm only) 2.5 mm insulator, Z=thick 2.9mmo center electrode.
Please verify that the part number or part will work for your machine or just ask we will be glad to help. We have a very large selections of NGK plugs for your needs.
The number # 45 is for our reference only.
Part is a 10 out of 10, 10 being new and 1 being the worst condition.
Location : C 303 205/162 CRS