How to Manage Parts Ordering and Stock Without Tying Up Cash

Parts tie up cash and floor space. Too much stock and you’re funding shelves; too little and jobs stall while you wait for orders. This guide covers how to order for known jobs, keep a lean stock of fast movers, and avoid the worst of both—dead stock and daily emergency runs.

1. Order as soon as the job is confirmed

When a customer books a job that needs specific parts, order them that day (or next morning). Use reliable suppliers with good availability and sensible lead times. If a part is on back order, tell the customer and move the job or offer an alternative date—don’t leave it until the day of the job to find out.

2. Stock only what you use often

If you do a lot of services, keeping oil, filters, and common consumables in stock makes sense—you use them regularly and bulk buys can save money. For anything else, "order when needed" is usually better than "we might use it." Dead stock (parts that sit for months) ties up cash and can go obsolete or get damaged. Review stock periodically and move or return slow movers.

3. Use suppliers that deliver when you need it

Same-day or next-day delivery from a trade factor or OE/pattern supplier reduces the need to over-order "in case." Build relationships with one or two main suppliers so you know their cut-off times and what’s usually in stock. If you’re regularly waiting for parts, either order earlier or switch supplier—delays cost you labour time and customer trust.

4. Track what you’ve ordered for which job

Job-based ordering only works if you know "parts for job X are in" before the car arrives. Use job sheets, workshop software, or a simple spreadsheet—whatever fits your size. See how to choose garage management software for systems that help with parts and job tracking. AutoChain Garage Management Software includes job and parts tracking built in. When the job is due, do a quick check: parts present, correct spec, no damage. Avoid "we thought we’d ordered it" on the day.