Description: Suzuki RM250 RL250 GT550 NGK Spark Plug p/n B-77EC or B7ES NOS #4 14 mm x 19 mm or 3/4 inch Plug B-77EC Replaces B7ES (verified in our NGK parts Manual). Bid is for one Plug. Same plug as B7ES.This is how this Plug part number (B-77EC) breaks down: B=14 mm, 7 is a warm plug, E= V-Grooved center Electrode (14 mm only) 1.5 mm insulator, the C= Low Angle ground electrode .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=19mm or 3/4", EF=tapered seat17.5 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. Example A and B= special design, F=Tapered seat, W= Tungsten Electrode.Please verify that the part number or part will work for your machine or just ask we will be glad to help. Will fit other Makes and Models. The number # 4 is for our reference only. Part is a 10 out of 10, 10 being new and 1 being the worst condition. Location : C 304 205/162 CRS Y 104 bag 209/052 # 20 B77EC # 21 B7ES
Price: 2.25 USD
Location: Mulino, Oregon
End Time: 2023-11-18T16:44:57.000Z
Shipping Cost: N/A USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Seller
Returns Accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Type: Spark Plug
Manufacturer Part Number: B7ES
Brand: NGK
