Turbos

Ensure proper sealing when installing the turbos on your N54.

Kit includes:

• 16 - ASA M7x39 studs
• 16 - Flange nuts
• All required gaskets and o-rings
• Water pump install hardware
• Replacement vacuum hose
• T-bolt clamps

Helpful hints:

For complete installation instructions, refer to Haynes Service Manual (T#193950).

Both downpipes must be removed to remove either front or rear turbo. Tie rod end may need to be separated from knuckle for clearance. Steering rack may also need to be rotated away from subframe for access. Valve cover heat shield will need to loosened and pushed upward to get clearance for turbo manifold removal.

If studs back out of cylinder head and nuts are seized to studs, replace studs. Thread studs in to head by hand to prevent cross threading. When installing the new studs in the cylinder head, use a high temperature loctite in the cylinder head side, and copper anti-seize on the nut side.

To make more room for access to the front turbo, remove the rubber line running in front of the subframe that attaches to the back of the map thermostat and remove the clip. Cut off the OEM clamp and replace it with a new hose clamp as well.

Complete removal of the water pump is not required. Detach the water pump from the side of the block and push it out of the way to make more room for access to the front turbo. If water pump is unbolted from the block, the aluminum bolts must be replaced.

Torque specs:
Bracket to cylinder head: 9Nm
Coolant supply line to crankcase: 9Nm
Coolant return line to crankcase: 8Nm
Coolant return line to turbo: 8Nm
Coolant supply line to supply line: 8Nm
Exhaust manifold heat shield: 8Nm
Oil supply line to crankcase: 20Nm
Oil pressure line to turbo: 8Nm
Oil return line to crankcase: 8Nm
Oil return line to turbo: 8Nm
Turbo manifold to head: 20Nm

Oil Supply Hose by Rein is a crucial part of your BMW’s engine system, designed to provide reliable oil flow to ensure optimal engine performance and protection. This high-quality hose is engineered to withstand the extreme temperatures and pressure that come with high-performance driving. Available at Turner Motorsport, the Rein Oil Supply Hose is a direct-fit replacement that helps maintain proper engine lubrication and prevents potential wear and damage to critical components.

• Specifically designed for BMW engines
• Delivers consistent oil flow to essential engine components
• Protects against engine wear and damage
• Engineered to withstand high temperatures and pressure
• Direct-fit for hassle-free installation
• Made from durable, high-quality materials for long-lasting performance

The Oil Supply Hose by Rein from Turner Motorsport is the ideal solution for keeping your BMW’s engine running smoothly, ensuring long-term reliability and performance.

BMW N54 3.0L Turbo Oil Feed Line - Rear Turbo is essential for supplying oil to the rear turbocharger of the BMW N54 engine. This high-quality oil feed line ensures reliable oil delivery, crucial for the optimal performance of the turbocharger. Designed to replace old or leaking lines, it helps prevent oil leaks, which can lead to severe engine damage. Replacing a worn or leaking oil feed line is crucial for maintaining the integrity of the turbo system and avoiding costly repairs.

• Ensures reliable oil supply to the rear turbocharger
• Prevents oil leaks that can cause engine damage
• Enhances turbocharger performance by providing consistent oil flow
• High-quality construction for durability and long-lasting performance
• Easy replacement of old or leaking oil lines

Positioned beneath the turbocharger on N20-equipped BMWs, this vital hose channels oil from the turbocharger back into the oil pan. Over time, wear and tear can lead to hose failure, resulting in significant oil leaks that may cause low oil levels and increase the risk of severe engine damage.

If your turbocharger drain hose is leaking or damaged, restore your engine's reliability with this high-quality replacement from Bremmen Parts. Engineered for durability and precision, it ensures a secure fit and long-lasting performance for peace of mind on the road.

The turbocharger oil supply line is one of the most common failure points on N14 and N18-equipped R5X MINIs. Responsible for delivering a steady stream of pressurized oil to the turbocharger’s center housing (CHRA), this line keeps the turbo’s bearings properly cooled and lubricated. Unfortunately, its location directly alongside the exhaust manifold and catalytic converter exposes it to extreme heat. Over time, this heat causes the oil inside the line to harden or “coke,” creating a permanent restriction that starves the turbo of vital lubrication.

MINI attempted to address this issue by adding a retrofit heat shield to N14 models, but the problem continues to plague MINI owners. Furthermore, the OEM banjo bolts rely on copper crush washers that become brittle and warp under heat, leading to persistent oil leaks at the back of the engine.

To eliminate these issues, ECS developed a high-performance replacement for the factory turbocharger oil feed line (11657534454). Built from premium stainless steel braided -4 AN hose and engineered to withstand the harsh thermal environment of the N14/N18 engine bay, this upgrade ensures consistent, dependable oil delivery. A PTFE inner lining provides exceptional chemical and temperature resistance, while black zinc–coated fittings and banjo bolts offer improved corrosion protection and long-term sealing. The result is a durable, leak-free solution that outperforms the factory design in every way.

Features:

-4 AN stainless steel braided hose eliminates the OE swivel fittings for superior sealing and consistent oil flow

PTFE inner lining delivers outstanding chemical and temperature resistance

Black-anodized aluminum AN fittings offer improved durability and a refined appearance

Black zinc–coated banjo bolts resist corrosion for a long-lasting repair

Includes four new crush washers to ensure proper sealing during installation

Whether you're fixing an oil leak or performing preventative maintenance, choose the ECS upgraded turbocharger oil feed line for lasting durability and leak-proof performance.