Your shopping cart is empty.
N62 & N62-TU Coolant Pipe

Problem: Rubber seal on aluminum cooling tube has failed. Coolant is leaking into back area of engine timing cover and out of hole.

Solution: Install an AGA collapsible cooling tube. We have designed a tube and seals that can be installed (by experienced tech) in under 10 hours.

Benefit: A potential $7,000 – $9,000 repair job is now achieved for less than $3,000. Additionally, the repair can be completed same-day compared to 2-3 weeks.

Models this product fits: 
2002-2005: BMW 745I & IL (E65 & E66) 2007-2010: BMW X5 4.8I (E70) 2004-2005: BMW 645CI (E63 & E64)
2006-2008: BMW 750I & IL (E65 & E66) 2004-2005: BMW 545I (E60) 2006-2010: BMW 650I (E63 & E64)
2004-2006: BMW X5 4.4I/4.8is (E53) 2006-2010: BMW 550I (E60 & E61) 2002-2005: Ranger Rover
Parts included with the kit: 

N62 Gasket Kit [Excluding N62-TU: 550-650-750-X5]:

Quantity Part # Description Price
1 11-53-1-710-048 Eng. Block Rear O-ring  
1 11-51-7-507-717 Heat Pipe / WP O-ring  
1 11-51-7-508-535 Water Pump Gasket  
1 11-51-1-439-976 Pipe Pump / Valley Pan  
1 11-14-7-507-278 Valley Pan w/Gasket  
2 11-61-7-521-181 Intake Man Gasket ($38.04 each)  
2 07-11-9-903-596 Cam. Adjuster O-ring ($3.61 each)  
1 12-31-1-439-988 Alternator Fee Pipe  
    Total $190.63

N62-TU Gasket Kit [550-650-750-X5]:

Quantity Part # Description Price
1 11-53-7-710-048 Eng. Block Rear O-ring  
1 11-51-7-507-717 Heat Pipe / WP O-ring  
1 11-51-7-508-535 Water Pump Gasket  
1 11-51-1-439-976 Pipe Pump / Valley Pan  
1 11-14-7-507-278 Valley Pan w/Gasket  
8 11-61-7-537-999 Profile Gasket ($12.08 each)  
    Total $151.11


Installation Instructions: 

Step 1

  • Intake cam adjuster units, left & right
  • Intake manifold (BMW Tis operation 11-61-050)
  • Drain engine block for coolant
  • Valley pan/cover
  • Vibration Dampener (BMW Tis operation 11-23-010)
  • Water pump (BMW Tis operation 11-51-000)

Step 2

Cut cooling tube & remove rear part by hand.

Step 3

Drill hole in front part of tube.

Step 4

Pull tube out with lever bar.

Step 5

Remove old seal w/pick tool. Clean Seal Groove: Completely clean is a must, use a small wire brush to remove ALL debris from old seal, inspect with mirror.

Step 6

[Part # 11-53-1-710-048]

Remove rear o-ring in back of engine block. Clean groove and install new o-ring. Part# 11-53-1-710-048 (Do not install the o-ring that comes on the pipe. It must stay in place on the pipe). Apply a little of the supplied grease to o-ring in rear of block.

Step 7

[Part # AGA-N62-V SEAL]

(Seal placed on tube for shipping purposes)

Remove seal by hand from pipe.

Install engine block front seal. 
Flat end of the seal should be facing towards the front of the car when installed in engine block.

Apply white grease (supplied in the kit) to new seal; fold seal and insert into hole (see drawing on the left for directions).

Work seal into grove by hand.

Seal must be completely seated before installing tube. If necessary, push seal in place with a blunt tool (blue nylon tool supplied)

Take extreme care not to damage seal when installing.

Step 8

Start with the tube collapsed. Lube tube on both ends with white grease (supplied in kit). Hold tube into engine block. Insert tube into rear of engine block. Turn tube so it expands, as front of the tube enters seal, observe front seal with mirror from water pump side as the tube goes into seal. Sealcannot be pinched. If seal pushes out, collapse tube a bit, turn tube without expanding a few turns and then continue expanding until seal can no longer be seen from water pump side.

Step 9

Rotate rear ring so the machine notch is straight up. Angled side is towards rear of engine block and o-ring.

Tighten tube by hand until it has tension on front and on the rear o-ring.

Note: the back at the block is cast and will vary from car to car. It is normal for o-ring to contact more on top or bottom.

Do not over tighten!

Step 10

Final assembly and testing:

  • Install all parts to seal cooling system.
  • Pressure test system to 15 Psi for a minimum of 3 hours.
  • Observe for leaks in system and no leaks from the hole in the front timing cover.


Step 11 Reassemble

For inquiries or further instructions please call our friendly and knowledgeable staff