OE quality double J gap iridium electrode spark plug R5B12-77 for GI3-1 GI3-3 GI3-5 RB77WPCC generator engine spark plug

Replacement for:

CHAMPION: RB77WPCC /KB77WPCC /FB77WPCC
BOSCH: 7306(MR3DPP330), 7301, 7305(MR3DII360)
ERPILLAR: 194-8518 /301-6663 /149-9931
WAUKESHA: 60999Z /69919D
CUMMINS: 4090121 /4098162 /4010981 /4302738
JENBACHER: 289383
GUASCOR: 76.64.291 /76.64.293 /76.64.292
Others:479-7702

application for:

ERPILLAR: G3406/G3412, G3508, G3512 /G3512E /G3512H,G3516/G3516E /G3516C,G3516B /G3516H /G3516A /G3516A+ /G3520 /G3520E/G3520H /G3520C (Biogas only)
CUMMINS: QSV81G, QSV91G, QSK60, QSK90, QSK19G, QSK45G, QSK60G, QSK38G, QSK50G
DEUTZ MWM: G620 V-8, TBG616 V-8, TBG616 V-12, TBG616K V-8K, TBG616K V-12, TBG616K V-16K, TBG620 V-8, TBG620 V12, TBG620 V-16, TBG620K V-12K, TBG620K V-16K
GUASCOR: FG180, FGLD180, FG240, FGLD240, FGLD360, FGLD480, SFGLD480 z
PERKINS: 4000 Series
SUPERIOR: 1706G2,1712G1,2400 G Series
WARTSILA: W25SG,W28SG,W34SG,W20V,34SG
WAUKESHA: APG1000,8L-AT25GL-13/16"Rch Heads,AT27GL Series-13/16"Rch Heads, 12V-AT25GL/AT27GL(13/16"Reach Heads), P48GL GLD, L36GL/GLD. H24G, F18GL/GLD, F18G, 2895GL-13/16"Rch Heads, 3521GL-13/16"Rch Heads,P5115GL,P9390GL-13/16 Rch Heads, L7044GSl-13/16"Rch Heads,L7042GL-13/16"Rch Heads,
7042GL-13/16"Rch Heads, L5790GL-13/16"Rch Heads, F3521GL-13/16"Rch Heads, L5108GL-13/16"Rch Heads, L5115GL, F2895GL-13/16"Rch Heads

Operation:

• The plug is connected to the high voltage generated by an ignition coil or magneto. As the electrons flow from the coil, a voltage difference develops between the central electrode and side electrode. No current can flow because the fuel and air in the gap is an insulator, but as the voltage rises further, it begins to change the structure of the gases between the electrodes. Once the voltage exceeds the dielectric strength of the gases, the gases become ionized. The ionized gas becomes a conductor and allows electrons to flow across the gap. Spark plugs usually require voltage of 12,000–25,000 volts or more to 'fire' properly, although it can go up to 45,000 volts. They supply higher current during the discharge process resulting in a hotter and longer-duration spark.
• As the current of electrons surges across the gap, it raises the temperature of the spark channel to 60,000 K. The intense heat in the spark channel causes the ionized gas to expand very quickly, like a small explosion. This is the 'click' heard when observing a spark, similar to lightning and thunder.
• The heat and pressure force the gases to react with each other, and at the end of the spark event there should be a small ball of fire in the spark gap as the gases burn on their own. The size of this fireball or kernel depends on the exact composition of the mixture between the electrodes and the level of combustion chamber turbulence at the time of the spark. A small kernel will make the engine run as though the ignition timing was retarded, and a large one as though the timing was advanced.

We are the No.1 spark plug manufacturer in China since 1961, with ISO 9000,TS 16949 Quality System Certifiion. The high quality of our products is the same as famous brands all over the world, while our price is more competitive. Welcome to visit our factory.

Summary

Shipping details

1)We can ship your item by DHL,FEDEX,UPS,EMS(Express Mail Service),or other shipping ways as your request.

2) If you choose to ship by DHL, when the shipping address loes in the remote area, buyer will be asked to pay remote area charge. We will inform you before sending the item out.

3) We take great care in packaging ensure that every item will shipment to you e.

Payment

T/T , L/C , D/A, D/P, Western Union ,Paypal and so on

Why choose us?

1. Over 60 years experiences in auto parts

2. Products under ISO9001, TS 16949 quality system certifiion

3. Good raw material and advanced technology to ensure high quality

4. Diversified products with reliable performance and competitive factory price

5. Strict on quality and 100% inspection

6. Professional technical support and service.

7. OEM accepted, tiral order accepted.

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