Spark Plug for Ducati Monster 821: Drilled and Slotted

Spark Plug for Ducati Monster 821: Drilled and Slotted

This spark plug is built for the Ducati Monster 821 and supplied to a written specification, so the part that comes off the line in the next order matches the one you approved. Fitment, base material and finish are fixed before sampling starts — that is what keeps the drilled and slotted programme stable once it moves from first order to repeat order.

Most buyers come to us after something went wrong: inconsistent hardness between lots, or documentation that arrived after the container shipped. Both are avoidable when the specification is written down before bulk and the approved sample is kept as the reference.

Specification

What decides whether it lasts

• Material — Zinc Plated Steel is the base; treat any substitution as a new approval.
• Hardness and heat treatment — recorded per lot, not per batch of paperwork.
• Fitment tolerance — checked on the actual Ducati Monster 821 mounting, not on a catalogue drawing.
• Finish — a sealed surface treatment holds up where the machine sees salt, mud and daily washing.
• Packing — individual packing plus inner cartons sized for the workshop bench.

Processes used on this line

• die casting
• sintering
• rubber vulcanisation
• injection moulding
• robot welding
• assembly line testing

Fitment notes

Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.

Where it is used

The drilled and slotted build is the one most often ordered for off-road trails. Riders also fit it for rural transport, food delivery, mining sites, off-road trails.

Ordering

1. Confirm the model year and frame number before ordering.
2. Approve a sample made from the actual bulk material.
3. Fix the packing and marking at quotation stage.
4. Book inspection before the balance payment, not after it.

Questions buyers ask

What testing is included?

Standard lots ship with dimensional and hardness reports. E-mark documentation is issued with the shipment when your market requires it.

What happens if a lot fails inspection?

The lot is re-inspected against the golden sample, and replacement pieces ship on the next available booking at our cost.

How long does sampling take?

Samples leave the factory in 10 working days, and each revision round adds about 5 days once you have seen the first piece.

How is packing specified?

Individual packing, inner box quantity and carton marking are confirmed at quotation stage so the cartons arrive ready for your warehouse.

Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.