N51 N52: N54 Intake Manifold Dowels Set | IMD52

Due to a bad batch, we had some too tight dowels sent out! Free replacements for those affected!

Till 2026, each order will include a free set of ABS N54 Manifold Dowels. If you add ABS dowels to your order, it will be upgraded to high temp glass fiber PET!
These in house made intake manifold dowels / eccentric inserts are made by PrintablesAuto for a BMW N51/N52 and are made to allow the alignment of the N54 twin turbo intake manifold to the block of the N51/N52.

HD option in high temperature glass fiber infused PET! (PET-GF) 

Glass Fiber PET will have a bumpy texture due to the glass fiber strands, is a skin irritant. 

1 order provides 6 dowels replacements. (1 extras) (center hole of manifold does not need one)

Do not forgot your PCV adapter! Available also as a full hardware kit

The N54 Manifold Swap Thread

 Video: N54 Intake Manifold Retrofit on N52

Customers looking to add a N54 Manifold can expect a higher peak in horsepower while sacrificing some low end torque in comparison to the stage 3 intake manifold*.

Recommended for manual transmissions (OR 325i or 330i automatics) as this allows you to gain some more peak power by tuning the redline to 7500rpm while the 328 automatic transmission will be limited to 7000rpm

For a N52 turbocharged or supercharged build, it is highly recommended for the N54 manifold for its design for boost and for the reliability of less moving parts (I.e. DISA valves)

Want to print your own? File available for purchase!

Need a tune? We recommend 22RPD

For Installation:

Recent fitment improvements have been made for press in perfection! Recommend adding black RTV on the outside before installation to help prevent falling out on removal.

Fitment*:

(E81, E82, E87, E88) - 125i, 128i, 130i

(E85, E86) - 2.5i, 3.0i

(E90, E91, E92, E93) - 323(x)i 325(x)i, 328(x)i, 330(x)i

(E60, E61) - 525(x)i, 528(x)i, 530(x)i

(E81 X1) - xDrive25i, xDrive28i

(E83 X3) - 2.5si, 3.0si  

*results may vary without accompanying tune.

2 Year Warranty - Made out of ABS/PAHT-CF.

PrintablesAuto Part Number: IMD52