Toyota Aygo 1.0 MMT Clutch Kit LuK 619 3122 00: LuK RepSet, Engine Mount Prices, and What Is a Resonator?

I've been ordering parts for a small workshop for eight years. I've personally made enough mistakes to document a few of them here, and one of those mistakes was ordering a LuK clutch kit with the right part number but the wrong gearbox type. That's why I keep a pre-order checklist. It's also why I won't tell you that the same advice fits every car.

If you're looking at the Toyota Aygo 1.0 MMT clutch kit LuK 619 3122 00, your situation probably falls into one of three scenarios: you need a clutch, you need a clutch plus engine mounts, or you need to press pause and chase an exhaust noise first. Let's sort you into the right one.

What the LuK RepSet clutch kit actually includes

The LuK RepSet clutch kit is the complete replacement package for the clutch system. For the Toyota Aygo 1.0 MMT, the part number I check first is 619 3122 00. It usually includes the clutch disc, pressure plate, release bearing, and alignment tool. What it doesn't include is the flywheel, the pressure plate bolts, or the transmission fluid you'll need after you open the clutch housing.

The MMT part matters. The Aygo's MultiMode Manual Transmission is an automated manual, not a torque converter automatic. The clutch is still a dry clutch, but the release mechanism is hydraulically and electronically operated. A manual-transmission kit and an MMT kit aren't automatically the same.

I'm not a Toyota transmission specialist, so I won't attempt to explain the full MMT calibration procedure here. What I can tell you from a parts-ordering perspective is to verify the engine code and gearbox code before you finalize anything. I once told a supplier 'Aygo 1.0 MMT' and they heard 'Aygo 1.0 manual.' We were using the same words but meaning different gearboxes. Discovered this when the release bearing didn't match the old one. That order went back, and the next one didn't.

As of February 2025, the LuK catalog lists 619 3122 00 for the Aygo, Citroen C1, and Peugeot 107 1.0 MMT applications. Always confirm with your VIN. Catalog listings don't know which engine code you have under the bonnet.

Three scenarios, not one universal answer

Here's the part where the decision branches. There isn't a single 'while you're in there' list that makes sense for every Aygo.

Scenario A: the clutch slips and the mounts look fine

If the car is slipping, the clutch pedal feels normal, and the engine mounts are dry, not cracked, and not leaking, order the LuK RepSet clutch kit and keep the job focused.

I know it's tempting to add everything while the gearbox is already out. But more work means more time, more risk of breaking a brittle bolt, and more chance of creating a vibration you didn't have before. On a car under 100,000 miles, a mount that still looks good can stay.

Use new flywheel bolts if the service manual says to. That's cheap insurance. But don't turn a clutch replacement into a full front-end renovation because you're scared of 'not doing enough.' The checklist should be based on evidence, not anxiety.

Scenario B: high mileage, unknown history, or torn mounts

When the car has over 110,000 miles, or you don't know whether the mounts have ever been replaced, the engine mount price becomes more than a line item. It becomes a reliability decision.

A cheap engine mount can look fine in a photo, but the rubber density and the fluid inside matter. Many mounts are hydraulic. If the mount has oil on it, or the rubber has separated from the metal, replace it while the drivetrain is already moved. You'll pay only for the part. Do it later, and you pay for another hour or two of labour to reach it again.

I skipped the engine mount check on a customer's Aygo once because the mount 'looked fine enough.' That was the one time the rubber separated three weeks after the clutch job. We paid for the labour to swap a mount we could have done while the gearbox was out.

This is where I get blunt about pricing. From what I've actually paid in the last year, the engine mount price on an Aygo can range from roughly $35 to over $130, depending on the brand and which side of the engine bay it's on. The low quote isn't a lie. It just doesn't include the risk. I've seen a $38 mount cause a vibration so bad the customer blamed the clutch kit. It wasn't the clutch. It was the mount.

Scenario C: the noise that isn't a clutch problem

This is the scenario I care about most, because I've watched people spend real money on a clutch kit when the problem was sitting in the exhaust system.

If the car isn't slipping and the clutch pedal isn't behaving strangely, stop. A metallic rattle that changes with engine rpm is often not the clutch at all. It can be a loose heat shield, a worn exhaust hanger, or a resonator with a broken internal baffle. I'm not an NVH engineer, so I can't give you a full diagnostic routine. But from a parts-ordering perspective, there's a useful clue: if the noise appears at steady rpm in neutral, it's less likely to be the clutch disc and more likely to be mounts or exhaust.

What is a resonator?

A resonator is a section of the exhaust system designed to cancel or reduce a specific frequency. It's not the same as a muffler. The muffler controls overall noise. The resonator is more like a tuning chamber for a frequency that's annoying inside the cabin. On the Aygo's small three-cylinder engine, a worn resonator can sound like metal sheets tapping together, especially around 2,000 to 3,000 rpm.

This is also where exhaust system prices get confusing. If a shop says you need a rear silencer, but the sound is coming from under the middle of the car, ask whether the resonator has been inspected separately. Replacing one resonator section is usually much cheaper than replacing a full exhaust system. Full system quotes include more pipe, more hangers, and more labour.

The anti-instinct advice: don't automatically add an exhaust resonator to a clutch job just because you're already underneath. If it was fine before, leave it. But if it's rusted or cracked, now is the time to replace it, not after it starts rattling on the first test drive.

I went back and forth between a cheap aftermarket resonator and a quality one on a customer's Aygo. The cheap part made the same drone again after 3,000 miles. The replacement still hasn't come back. That's not a reason to always buy the expensive part. It's a reason to compare the part, the gasket, and the labour in one clear quote.

How to tell which scenario you're in

If you're not sure, work through this list with the car in front of you:

• Does rpm rise without a matching increase in road speed? That's clutch slip. Start in scenario A or B.
• Does the vibration happen when the car is stationary and you rev the engine? That's not the clutch. Look at mounts and exhaust first.
• Are the engine mounts torn, oily, or moving more than about half an inch when you pry on the engine? You're in scenario B.
• Is there a metallic rattle around 2,000 to 3,000 rpm that disappears higher up? Ask a shop to check the resonator before authorising a clutch replacement.

Still stuck between A and B? Use the mileage. Under 100k and no mount damage means scenario A. Over 110k with no service record means scenario B. The middle ground gets more expensive over the years, not less.

If you're in scenario C, leave the LuK RepSet clutch kit on the shelf until the exhaust has been ruled out. You can't fix a resonator with a clutch, and you can't fix a clutch with an exhaust.

The transparency rule I apply to every quote

I've learned to ask 'what's NOT included' before I ask 'what's the price.' That one question has saved me more money than any discount code.

When a customer asks me for a LuK RepSet clutch kit, I try to list the kit, the new bolts, the transmission fluid, and anything else the job genuinely needs. Same with engine mount prices. If a quote only includes the rubber mount, ask about the bracket and bolts. Same with exhaust system prices. If the quote says 'system', ask whether it includes every section from the catalytic converter back.

The vendor who lists everything upfront, even when the total looks higher, usually costs less in the end. The quote that hides the extras is the one that makes you spend twice. I do not call that a deal. I call it a problem you find out about later.