Answers to the most common questions.

On the sticker in the service booklet or the spare wheel well, and in German papers in field D.2.

German registration document (Part I): field D.2. Austrian registration certificate: field D.2, on one line with slashes; field P.5 only gives the stem, such as CFF instead of CFFB. Papers from other countries may not list it, then the sticker or the stamp on the engine block helps. The engine code has three to four letters, for example CFCA, CFFB or DEJA. Year of manufacture and horsepower are not enough: the same model line contains engines that need completely different solutions.

Find the right solution with the engine code

The engine code decides, and the solution finder checks it for you.

In the shop, every product description lists the matching engines and original part numbers (OE numbers).

Check your vehicle in the solution finder

Send us your engine code and we check the fitment by hand.

What counts is the engine, not the model: with the engine code, or if you do not know it, make, model and the numbers from the registration document, we can see whether a part fits.

Ask about fitment

It depends on the design of your TDI engine, and the solution finder determines it from your vehicle.

Depending on the design, the options are the reinforced drive pin, the conversion without balancer shaft module and the chain conversion for EA189 or EA288.

Have your design determined

We always recommend stage 2, because it delivers more oil than stage 1 and so leaves more reserve.

Stage 1 exists as a budget option only for the conversion kit and the EA189 chain conversion, the drive pin and the EA288 chain conversion come in one version, and for the EA189 chain conversion, T5, Amarok and Crafter only come with stage 2. For the conversion kit, the VW T5 and the Amarok and Crafter are separate variants; the product page in the shop shows which one belongs to your vehicle.

Compare stages and prices in the solution finder

No, the EA288 chain conversion only fits the first generation.

The engine list on the EA288 page shows which generation you drive and what MMHP offers for the evo.

EA288 evo: identify your generation

Parts price plus workshop time, and the solution finder shows price and installation time for each solution.

Workshop costs are not included, they depend on your workshop's hourly rate.

Solution and price for my vehicle

The manufacturer listed the same component under new numbers during production. Our part fits all the numbers listed.

New numbers arise when the component is changed or the supplier switches.

More flow rate, and with it a reserve for lubricating the bearing points.

Upgrade oil pumps are developed and tested for high loads and performance increases. Why flow rate matters more than a single pressure value is explained in our knowledge article.

Flow rate explained in the wiki

The delivery time calculator on every product page in the shop shows the expected delivery date: enter your country and read off the date.

We deliberately do not state a fixed delivery time here. We ship from a worldwide network of warehouses and logistics partners and choose the most favourable location for your order, so how long it takes depends on the item and the destination country. You will find the calculator on the product page, near the product image and the add-to-cart button.

All shipping methods and their tracking are listed on the shipping page in the shop.

Shipping methods in the shop

The payment methods available depend on your delivery country. The shop shows them during checkout and on the payment page.

Payment options in the shop

Outside the EU the recipient pays customs duties and import charges. We enclose the customs paperwork.

Can’t select your country in the shop? Write to us, we can enable many countries on request. If the courier asks for documents, point them to the enclosed commercial invoice. Please give a phone number when ordering if you can. We do not offer express shipping.

Write to us via the contact form, which opens a support ticket.

Include your order number and what should be cancelled or changed, for example the delivery address.

Open a support ticket

We cannot give an exact date. You can ask the shop to notify you on the product page.

Despite ongoing production, an item can sell out in peak periods. Leave your email address on the product you want and the shop notifies you automatically as soon as it is back.

An experienced workshop needs 1–4 hours depending on the product, and DIY works with mechanical experience, the eGuide and the special tools in the kits.

The time for each product is shown as an averaged figure from experience in the solution finder, next to the price.

Installation time and price per product

No, we do not keep a workshop directory. Any qualified auto workshop can do the installation.

We cannot continuously assess the quality of work at third-party workshops, so we do not give a recommendation. Ask your workshop whether they work from an illustrated step-by-step guide. You can show them the eGuide after purchase.

The special tools come with the conversion kits. Standard automotive tools and a lift or pit are provided by the workshop.

The exact scope of delivery is on the product page in the shop. Some of the tools are single-use, made for exactly one conversion, so visible wear afterwards is expected. We do not sell individual parts from the kits separately. If a part arrives damaged, get in touch.

After purchase we email you login credentials. You use them to log in to the knowledge base at wiki.mm-hp.de/login.

The eGuide is an online guide with images and text. The login credentials go to the email address you gave at checkout.

Check your spam folder, then set a new password at wiki.mm-hp.de/login with “Forgot password”.

Use the email address you ordered with. The shop login credentials do not work there. If it still fails, write to us from that address and we reset your access by hand.

In principle indefinitely. Anyone who owns the product gets the guide too, even years later.

Access is tied to you personally. Because the eGuides are protected content, we review access after a long period or in case of irregularities and may suspend it temporarily in individual cases. If your access ever stops working, let us know and we reactivate it.

No. The eGuide is deliberately online only, and the package contains no printed guide.

That way you always see the latest version, improvements from real-world use are continuously included, and our development work stays protected. A smartphone or tablet with internet is all you need in the workshop.

Through the right of withdrawal. The process and deadlines are in the withdrawal policy in the shop.

Withdrawal policy in the shop

Use the contact form, with your order number and photos of the affected area.

Describe the problem as precisely as possible. The photos should show the affected area clearly, so we can review your case quickly.

Send a complaint

Your engine code, order or item number and, for technical questions, clear photos.

Support works with the same data shown in the product description in the shop. Checking it beforehand often answers fitment questions in advance.

We no longer offer phone support. Write to us via the contact form, it is the fastest way.

We offered phone support for many years. Most questions are technical, though, and go to specialists from our engineering team who cannot be reached at all times. In writing, nothing gets lost: you can reread the answer at any time, and the misunderstandings and order mistakes that easily happen on the phone do not occur.

Ask your question in writing