How to Train a Parts Manager (And Why a Certification Pays for Itself)
Training a parts manager means teaching someone to run an inventory and a counter as a profit center, not a stockroom. Most parts managers got the job because they were the best counter salesperson you had. They knew every part number cold and could find anything on the shelf in seconds. So you handed them the department. Then nobody taught them how to read a fill rate, protect a margin, or decide what to stock and what to let go. That's not a competence problem. That's a training gap, and it's quietly costing your dealership money every single week.
At Bob Clements International, we work with parts managers across OPE, Ag, Powersports, RV, marine, trailer, and construction dealerships, and the pattern is almost always the same. The parts department feels busy. The counter's moving. And the gross profit isn't where it should be.
Why your parts manager is struggling (and it's not their fault)
Picture your best counter salesperson. Fast, friendly, the one who knows where the oddball gasket lives without looking it up. So you promote them. Good call, on paper.
But running a counter and running a department are two different jobs. Now your former best counter person owns purchasing, inventory levels, freight costs, the aged parts gathering dust in the back, and the margin on every ticket. They're still the fastest person at the counter, so they're also still standing at the counter half the day. They're doing two jobs and got trained for the easier one.
So they keep ordering the way they always have. They discount to keep a customer happy because nobody taught them what that discount does to the month. And a year of slow-moving parts piles up in the back while the fast movers run out in season. None of that means you promoted the wrong person. It means you skipped the part where somebody teaches them to manage.
How do you train a parts manager?
Start with the three things a trained parts manager does differently.
They know their fill rate. Fill rate out of stocking inventory is the percentage of the time a customer asks for a part and you can hand it to them right then. The target is 90%. If 10 people come in for a part today, 9 should walk out with it, no ordering, no waiting, no "we'll have to order that." A trained parts manager knows this number. An untrained one is guessing at what to stock, and every guess sends a customer down the road to the dealer who figured it out.
They track what they miss. Most counters let a customer walk out without writing down the part they couldn't fill, because they're already helping the next person in line. It's not laziness, it's busy. But without that lost-sales data, there's no real fill rate, and without a real fill rate, you keep stocking the wrong things. A trained parts manager keeps a lost-sales log. A notepad works. Every unfilled request gets a part number written down. A few weeks of that and the picture gets clear fast.
They protect the margin. A trained parts manager understands that the counter gives away more money in small discounts than the dealership ever notices, and they coach against it. They stock wide but shallow, carrying a large variety of parts in small quantities, instead of burying cash in a mountain of one part number. The rule we give dealers: start stocking a part after three unique customer requests in a year, stop when it drops below two. That keeps inventory tied to real demand instead of habit.
Stock what sells. Track what you miss. That's how a parts department actually makes money.
Are there certification programs for parts managers?
Yes. The Parts Manager Certification (PMC) from Bob Clements International is built specifically to teach a working parts manager the management half of the job, online and section by section, so they don't disappear from the counter for a week.
It covers the whole role: buying for profit, receiving and inventory accuracy, the counter process, the inventory KPIs that tell you whether the department is healthy, pricing and margin protection, freight recovery, hiring, and pay plans. It's the difference between a parts manager who runs the counter and one who runs a profit center.
A quick note on timing. PMC opens September 15. If you're reading this in season, the smartest move is to get on the pre-registration list now, then start your manager on Section 5, Module 3: Inventory KPIs the day it opens, because fill rate is the single number that moves the department fastest. Work just that section first. When you make it through season, go back and work through the rest of the certification together.
Where to start with your parts department this week
Don't try to fix the whole department at once. When everything is important, nothing actually is. Pick the biggest leak first.
Start by finding out where your parts department is actually losing money. Our [Parts Self-Assessment]([URL PENDING]) takes about 15 minutes and shows you which gaps are costing you the most, without leaving your desk. Then put one habit in place: a lost-sales log at the counter, starting tomorrow morning. Part number, date, done. That single notepad will tell you more about your fill rate in three weeks than your gut has in three years.
The assessment shows you what's leaking. The lost-sales log starts measuring it. And the Parts Manager Certification turns your best counter person into the manager you actually promoted them to be.
Frequently Asked Questions
How do I train a parts manager? Most parts managers were promoted from the counter and never taught to manage. Train them on the three things that separate a trained parts manager from an untrained one: knowing their fill rate (the target is 90%), tracking lost sales so stocking decisions are based on real demand, and protecting margin at the counter. The Parts Manager Certification from Bob Clements International covers the full role online, section by section, so your manager can learn without leaving the counter.
Are there certification programs for parts managers to boost dealership performance? Yes. Bob Clements International offers a Parts Manager Certification (PMC) built specifically for parts managers in equipment dealerships. It covers buying for profit, inventory accuracy, the counter process, inventory KPIs like fill rate, pricing and margin protection, and freight recovery. It's designed to be taken online, section by section, by a working parts manager. PMC opens September 15, with pre-registration available now.
What is fill rate in a parts department? Fill rate out of stocking inventory is the percentage of the time a customer asks for a part and you can hand it to them on the spot, with no ordering or waiting. The healthy target is 90%. Lost sales, special orders, and emergency orders all count against it, which is why chasing 100% isn't worth the cash it would take to get there.
How can I improve my dealership's parts department performance? Start by tracking your fill rate and your lost sales, then stock wide but shallow so inventory matches real demand instead of habit. The fastest gains usually come from a parts manager who reads the numbers and protects margin at the counter, not from spending more on inventory. A parts self-assessment will show you where the department is leaking before you spend a dollar.
Sara Hey is the President of Bob Clements International, a dealership consulting and training firm that works with OPE, Ag, Powersports, RV, marine, trailer, and construction dealers across North America. She is the author of The Dealership Equation and co-author of You're the Problem*, writes the "Hi Sara" advice column, and runs BCI's dealer training programs including the Parts Manager Certification. Learn more about BCI →*