Contact Us

Contact Person : Nicholas Ye

Phone Number : 18673307102

WhatsApp : +8618673307102

Free call

320 Series ignition spark plug 77 Heat Range Replace for P7.1V5 351000

Minimum Order Quantity : 20 Price : TO BE CONFIRMED
Packaging Details : Tin, Plastic box, white box, Carton Delivery Time : 30 working days
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability : 10000 pieces per month
Place of Origin: Hunan,China Brand Name: TAKUMI
Certification: TS16949 ISO9001 Model Number: R10P7

Detail Information

Application: 320 Fit: P7.1V5 351000
Electrode: Special Design Thread: M18*1.5
Hex: 22.2mm Reach: 20.6mm
Resistor: Yes Seat Type: Flat
High Light:

industrial spark plugs


engine spark plugs

Product Description

320 Series Generator Spark Plugs 77 Heat Range Replace for P7.1V5 351000
TAKUMI brings together everything we know as an OE supplier to provide spark plugs for a wide range of industrial and CO-GEN applications. TAKUMI industrial spark plugs had been widely serving for worldwide gas engines with proven reliable quality.

The spark plug has been designed specifically for the performance enthusiast.

1.The Iridium Spark Plugs offer extreme ignitability, improved throttle response and superior anti fouling.Fine Iridium tip ensures high durability and a consistently stable spark.


2.Laser welded Iridium center electrode tip.Iridium alloy has extremely high melting point, perfect for today’s high-tech,high-performance engines. 


3.Trivalent Metal Plating has superior anti-corrosion and seizing properties.Outstanding acceleration, high fuel efficiency and durability.Ultimate design, technology and performance. 


4.Corrugated Ribs Prevent Flashover.


5.Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better.








20.6 mm


22.2 mm

Seat Type




Heat Range


Electrode Type

Special design 

Resistor or Non-Resistor



 P7.1V5 351000

 P7.1V6 382195

 P7.1V5 35 1000
 P7.1V6 38 2195
Apply for:
 320 Series​

  • 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.

320 Series ignition spark plug 77 Heat Range Replace for  P7.1V5 351000 0

Our Factory:

320 Series ignition spark plug 77 Heat Range Replace for  P7.1V5 351000 1320 Series ignition spark plug 77 Heat Range Replace for  P7.1V5 351000 2
Why choose us?
1. Over 50 years experiences in auto parts
2. Products under ISO9001, TS 16949 quality system certification
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.
Shipping details:
1. We can ship your item by DHL,FEDEX,UPS,EMS(Express Mail Service),or other shipping ways as your request.
2. We take great care in packaging ensure that every item will shipment to you safe.
We are the No.1 spark plug manufacturer in China since 1961, with ISO 9000,TS 16949 Quality System Certification. 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.

You Might Be Into These
Get in touch with us

Enter Your Message