46.000 products
    maximum variety
    Free returns
    as easy as it can be
    Customer care
    personal & competent
    Safe shopping
    thanks to SSL technology

iridium spark plug LMAR 8 BI-9

More Views

iridium spark plug LMAR 8 BI-9

Order ID 50070101530
Product Questions > Ask first Question

NGK Iridium Spark Plug LMAR ? AI-8

High quality at a reasonable price, which is why NGK is the original equipment supplier for so many motorcycle manufacturers.


  • LMA = thread diameter: 10 mm, thread length: 26.5 mm
  • R = with interference suppression resistance (5 kOhm)     
  • 8 or 9 = heat value  
  • A = spanner width: 14 mm
  • I = iridium electrode tips
  • -8 = 0.8 mm electrode gap

Corresponds to the OEM:
LMAR 8 AI-8 = BMW 12 12 7 728 657.
LMAR 9 AI-8 = KTM 772 39 093 000

For a technically correct mounting, spark plugs must generally always be mounted with the appropriate torque spanner.
In order to prevent damage to the spark plugs or engine by improper installation, tighten them to the following tolerances:
Aluminium cylinder head = 15-20 Nm
Cast-iron cylinder head = 15-25 Nm

Price each

Shipping & delivery


We always give our best to handle your order as fast as possible. Orders which are placed before 2 pm on a work day are usually handed over to our logistics partner (DHL) on the same day if in stock.


Shipping cost

4.95 Euro within Germany, Poland  

5.95 Euro in Austria, Belgium, Denmark, Luxembourg, Netherlands

9.95 Euro    Spain, Finland, United Kingdom, Italy, Sweden

14.95  Euro    Cyprus, Czech Republic, France, Greece, Hungary, Ireland, Portugal

19.95  Euro    Estonia, Lithuania, Latvia, Malta, Slovenia, Slovakia, Romania, Bulgaria

All delivery costs are charged per order.



In our online shop, you can choose from various payment options. You can pay by invoice, direct debit, cash on delivery, credit card or finance.

Product Questions (0)
  • Here you can ask public questions which can be answered not only by us, but also by other customers. If you have a private question, please use our contact form.

    Fragen zum Produkt

    Your question will be displayed after moderation.

    If you want to be notified when your question is answered, please log in.