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Auto Oil Separator Specification Example for Passenger Cars: Vented Design

Source:Diesel Truck Engine / Time:2026-09-18

Auto Oil Separator Specification Example for Passenger Cars: Vented Design

This is a worked specification for auto oil separator in a vented design programme. It is the document we would send a buyer who asks what exactly they are getting: the material, the dimensions that are actually controlled, the finish, and the checks that happen before anything is packed.

The vented design version exists because the duty cycle on passenger cars is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually packing that arrived crushed at the port.

Auto Oil Separator

Example specification

ItemAuto Oil Separator
ApplicationPassenger Cars
VersionVented Design
Base materialSilicone
Controlled dimensions4 key dimensions, recorded per lot
Tolerance band±0.1 mm
Finishpowder coated
MOQ1,000 pieces per specification
Sampling14 working days, 3 days per revision
ComplianceCCC

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Silicone, in this example.
  3. List the dimensions that are actually controlled and the tolerance on each.
  4. Name the finish and what it has to survive.
  5. State the inspection level and who pays when a lot fails.

Auto Oil Separator example

Processes involved

  • anodising
  • die casting
  • laser cutting
  • shot blasting
  • surface grinding
  • precision stamping

Where this example applies

Programmes that run vented design most often specify this build for passenger cars. Related applications include passenger cars, courier fleets, three-wheelers, camper conversions, assembly programmes.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 1.5 sampling on the finished lot.
  • Finish inspection under agreed lighting.
  • Carton drop test on the first lot of a new packing specification.

Questions buyers ask

What testing is included?

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

How long does sampling take?

Samples leave the factory in 14 working days, and each revision round adds about 3 days once you have seen the first piece.

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.

What is the minimum order quantity?

The standard MOQ is 1000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.

Ask for the current catalogue and the specification sheet for this line.

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