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We're available by phone Monday - Friday, 8 a.m. - 5 p.m. PST

Warranty Information

We believe in quality and longevity of our products, and that's why we offer a 1-Year warranty for "non-wear" items like our tools kits and coolant pipes. Find out if your tool is covered. Call us today. 

Installation Instruction Library

How-to Installation Videos

More of a visual learner? We've got you covered. Visit our AGA Tools YouTube channel for more information about our tools and products and for step-by-step repair instructions. 

Press Inquiries

Please email We'd love to help answer any questions you may have, and look forward to hearing from you.

Frequently Asked Questions

How should the Coolant Pipe be installed?

The tapered portion of the coolant pipe should be facing the cylinder head. Make sure the pipe sits evenly in the pocket and extends all the way to the water pump. Extend the coolant pipe until the seal is no longer visible. The coolant pipe can be hand-tightened until secure.

I purchased a Coolant Pipe with a gasket kit. Are there any additional items needed to complete the coolant pipe replacement repair?

Our gasket kits will include everything you need to complete a coolant pipe replacement, except for the coolant or antifreeze. Coolant is considered a hazardous material that requires proper handling to protect public health, so we ask that our customers purchase this item separately in an effort to make transportation of our coolant pipes and accessories safer.

What is the fluid capacity of the AGA Billet Power Steering Reservoir?

BMW’s power steering reservoir has a fluid capacity of 320 Ml. Our Power Steering Reservoirs has a fluid capacity of 604 Ml.

The Motor Won’t Rotate When Performing The Valve Stem Seal Repair. What Should I do?

It’s likely that you have something lodged in the cylinder on top of the piston. Carbon buildup can drop from the valve onto the piston during removal, causing a jam. The piston is unable to squeeze the carbon build up through the .5mm clearance in the cylinder head, which prevents the motor from rotating to top dead center. We recommend using a borrow scope to see if there’s anything located on top of the cylinder in top dead center that was previously worked on. If you notice debris, use a needle nose nozzle to remove the blockage with compressed air.

Do you have to remove the water pump when installing the your coolant pipe?

No, you are not required to remove the water pump when replacing the coolant pipe in an N62, N62-TU or N73 engine. However, removing the water pump will help give you more visibility so that you can ensure that your seal is sitting properly in the vehicle.

What BMW models does the Sunshade Repair Kit fit?

The AGA Tools Sunshade Repair Kit fits the E38, E39, E46, E60, E65, E66.

Would this fix work for a Mercedes-Benz sunshade as well?

Yes on some models. This part is not sold separately from Mercedes-Benz or BMW so you won’t be able to look up the part number. Unfortunately, the best way is to determine this kit’s compatibility with a vehicle is simply to compare the product pictures on our site to the product in the car. Please call us if you need additional assistance.

What is the average repair time for the Coolant pipe replacement repair if I use your tool?

Here are the estimated repair times when using our products. 

N73 Coolant Pipe Repair- 12-15 Hours

N62 Coolant Pipe- 8-10 Hours (10 hour estimate includes the water pipe removal)

Mercedes-Benz Manifold Lever Install Repair- 4-5 Hours

Power Steering Reservoir Install Repair- 1-2 Hours (rear lift is less than 1 hour)

Sunshade Repair- 2-3 Hours

N62 Valve Stem Seal Repair

  •  5/7 Series- 18-20 Hours
  •  X5 SUV- 20-22 Hours

N63 Valve Steam Seal Repair

  •  5/7 Series- 26-28 Hours
  •  X5 & X6- 29.5 Hours

ABC Flush Repair- 1-1.5 Hours

N62 Secondary Air Cleaner- This will depend on how bad the car is plugged, but typically we estimate 5 hours for 1 bank and 8 hours for 2 banks. 

How much PSI should I put into the cylinder head during the Valve Stem Seal repair?

Our technicians use around 15-20 PSI of pressure when performing the leak down test.

Are the valve stem seals you sell OEM?

No. The valve stem seals included in our kits are manufactured by Elring and made out of Viton, a brand of synthetic rubber and fluoropolymer elastomer that withstands high temperatures better than the OEM seals supplied by BMW.

Do the N63 and N62 Valve Stem Seal Tool Kits have everything I need to complete the valve stem replacement repair?

You will need a fuel injector tool kit to remove the injectors and a cam timing tool kit to retime. We sell both of these items here, however, it is not necessary to use our kits exclusively.

Will the N63 Valve Stem Seal Tool Kit work on an N62 engine?

No. The N63 tool kits will not work on N62 or N62-TU engines. This kit is designed specifically for N63 engines.

Do I need to replace the camshaft bolts during the N63 or N62 Valve Stem Seal Repair? Are camshaft bolts included in the kits?

It is strongly recommended by BMW that you replace the camshaft bolts during the repair, but it is not required. Camshaft bolts are currently not included in our Valve Stem Seal tool kits.

What’s the difference between the square carbon blade and the replacement carbon blade?

The four-sided square blade is used to tackle heavy-duty carbon buildup and should be used in conjunction with the original carbon removal hook. Use the square blade to puncture the carbon and the original blade to finish the extraction. The amount of carbon in your engine will depend on the vehicle’s mileage and the duration of the problem.

Can you preform the Mercedes-Benz ABC flush without the star diagnostic system?

Yes, you can use the tools without the Star Diagnostic System. Even though it is easier with the star tester, you can manually activate the ride height button on the dash on/off and flush the system.

Is there a way to tell if my stem seals are good without having to remove them?

There is no way to determine the condition of the seals without removing them. However, if you have no oil consumption or smoke coming from the tail pipe, your seals should be in good condition. As a reference we typically see vehicles come in for the valve stem seals at about 90,000-120,000 miles, when the car is smoking.

Can the valve stem seal repair be completed without removing the engine?

The only major component that needs to be removed is the valve covers. This is what makes the repair so affordable!

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