Adding an oil pan programme is a coverage decision before it is a price decision. What matters is how much of a number family one supplier can cover, whether the identification evidence travels with the part, and whether long-tail references can ship alongside the volume lines.
Start With Coverage, Not Price
A programme that covers four numbers out of a family of twelve creates work rather than removing it. Counter staff still have to check two suppliers, and two carton standards still arrive. Ask for the whole family quoted, including the slow references, and judge the supplier on whether they will hold them.
The RUIFAN catalogue holds 136 references across 21 vehicle-brand blocks. Some blocks hold a single number — Ford, Volvo, Opel and Mercedes-Benz each hold one — and those are exactly the references that get dropped elsewhere.
Check the Identification Evidence
- Is the OE number published, or only an internal reference?
- Are recorded alternate numbers published with the part? Twenty records in this catalogue carry them.
- Is there a vehicle application table? Six records carry one, including a Mercedes-Benz record spanning C, CLK, E, G, ML, S, SL and SLK families with chassis numbers and years.
- Is the photograph large enough to check flange pattern and drain position?
- Where a record has no data, does the supplier say so, or fill the gap with a guess?
Questions to Ask Before the First Container
- Which casting or stamping method is this quote based on?
- What is the carton specification and how is the sealing flange protected?
- Can long-tail references ship mixed with volume lines in the same container?
- What quality systems are in place? RUIFAN records ISO 9001 and TS 16949 on the original site.
- What happens if a number is missing from the catalogue — will you tool from a sample?
- What is the stated production capacity? RUIFAN records 500,000 oil pans per year.
The Checks That Pay for Themselves
| Check | Why | Consequence if missed |
|---|---|---|
| Flange flatness | Decides whether the part seals at all | Returns after fitting, which are the expensive kind |
| Drain boss thread | Damaged threads are invisible in the carton | Workshop discovers it on the ramp |
| Sensor boss presence | Separates near-identical numbers | Wrong variant in stock under the right number |
| Coating coverage at seams | Where corrosion starts on steel pans | Warranty claims eighteen months later |
| Carton marking accuracy | Decides whether stock can be found | Stock that exists but cannot be located |
More From the Knowledge Centre
Die Casting Sand Casting and Gravity Casting for Engine Parts
The three casting methods listed in the RUIFAN process sheet, what each one is good for, and how the choice shows up in the finished part.
Deep and Shallow Draw Stamping for Oil Pans
How a steel pan is drawn, where the metal thins, and why draw depth is the constraint that decides tooling.
Oil Pan Sealing Surface and Gasket Basics
Flange flatness, gasket choice and torque sequence — why most replacement pans that leak were fitted, not made, badly.
About This Guide
Where does the information in this guide come from?
Content marked as published on the original RUIFAN website is reproduced from the archived site with the date it carried. Everything else is general engineering background written for this site. Company facts, capacities and certifications are only stated where RUIFAN recorded them.
Can RUIFAN help me identify a part I cannot name?
Yes. Send the number on the old part, the vehicle and engine code, and photographs of the flange face and drain boss side. We check it against the 136 catalogue records and tell you if it is there.
Do you publish the catalogue data behind these guides?
Yes. Every reference has its own page carrying the OE number, alternate numbers, notes and application table the original database stored for it.
What if the part I need was never in the catalogue?
The original RUIFAN site stated the factory develops oil pans and other aluminum castings from customer-supplied samples or drawings.
Put This Into an Enquiry
Send the reference, the vehicle and the quantity. We will confirm against the catalogue before quoting.