PPI BMW Injector Bore Repair Kit
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Availability: Awaiting inventory restock - New inventory is expected to arrive mid April, and all kits will begin shipping within the next 1-2 weeks.
PPI is proud to announce our patent pending injector bore repair kit for all BMW direct injection engines and 2008-2016 vw/audi 2.0 GDI engines.
Please make sure to use the drop down menu and select your correct engine or we will ship a N54 kit by default. It is a different repair sleeve for each engine and a N55 kit will not interchange with a N54 kit.
Kits include only the following: 1x correct drill bit, 1x correct tap matched to our sleeve, engine cylinder quantity x repair sleeves, 1x drill guide, and 1x air hose to blow out the combustion chamber to ensure no shavings made its way into the cylinder and if so, this will blow them out.
- A customer made a nice DIY video which can be found here.
Do THIS to Your BMW to AVOID a $7,000 Repair!
(Video Credit to Jake Spence)
Items not included you need to buy:
- Permatex High-Temperature Thread Sealant Locks and Protects, 6 mL
- New injector seals Injector seal tool (found on Amazon cheap)
- Parts cleaner spray (local auto parts store)
- Ptfe high temp sealant (local auto parts store, see link above)
- Wheel bearing grease (local parts store)
- Shop air (air compressor is needed for air hose, small harbor freight compressor will do)
- Allow 3 complete heat cycles before getting into boost to allow the new seals to seat in.
Disclaimer: this kit is to be used to fix a ovaled or worn out injector bore in the head as a chance to keep from having to replace the engine or cylinder head. This kit involves drilling and tapping the injector bore hole. By installing this kit you do so at your own risk. If you are not comfortable doing this we strongly advise having a shop do this. It is typically 1-2 hours labor time.
We adhere to the return policy established by the manufacturer of this product. For full details, please refer to their official policy at: https://ppifpr.com/shipping-returns/
US Patent #63,285,286 19,539,171 30,048,269
PPI Injector Bore Install Guide
Professional Installation Instructions (Option B Version)
1. Overview
This document provides a clean, structured, professional installation guide for installing PPI injector bore sleeves. All steps below reflect the manufacturer’s instructions exactly as provided and formatted for clarity and technician readability.
2. Required Materials & Items Not Included
Items Not Included (Must Be Purchased Separately):
- Permatex High Temperature PTFE Thread Sealant (592 or equivalent)
- New injector seals
- Injector seal compression tool (3-stage type, commonly found on Amazon)
- Parts cleaner or brake cleaner spray
- Wheel bearing grease
- Shop air source (small air compressor is acceptable)
Recommended product link:
Permatex High Temperature 592 Thread Sealant (6ml Tube):
https://shop.advanceautoparts.com/p/permatex-high-temperature-592-thread-sealant-6ml-tube-59214/7010664-p
3. Safety Notes
- Wear safety glasses during all compressed-air operations.
- Ensure the engine is cool before beginning work.
- Rotate the engine by hand only when positioning pistons.
- Keep metal debris away from open engine components.
4. Installation Procedure
Step 1 — Position Piston at Bottom of Bore
Rotate engine by hand until the piston in the target cylinder is at the bottom of the bore. This provides clearance for drilling.
Step 2 — Drill the Injector Bore
Insert the supplied drill bit into the drill guide. Apply wheel bearing grease to the drill bit to capture metal shavings. Drill straight down using the guide. Remove the bit and clean off grease and debris.
Step 3 — Move Piston to Top of Cylinder
Rotate the piston to the top of the cylinder. This ensures metal particles cannot fall downward during tapping.
Step 4 — Tap the Hole
Apply wheel bearing grease to the tap. Insert the tap through the drill guide and tap the bore while keeping alignment straight. When the tap suddenly becomes easy to turn, you have reached full depth. Back the tap out.
Step 5 — Clean Threads
Spray brake cleaner into the tapped injector bore to remove grease and debris.
Step 6 — Blow Out the Cylinder
Connect the supplied air hose to the spark plug hole of the cylinder. Blow compressed air into the cylinder. All remaining shavings will be forced out of the injector bore. Wear safety glasses.
Step 7 — Apply Thread Sealant
Apply PTFE high-temperature thread sealant ONLY to the first two threads of the repair sleeve. The sealant will distribute itself as the sleeve is threaded in.
Step 8 — Install the Sleeve (Do NOT Tighten)
Thread the sleeve into the tapped injector bore by hand. Turn clockwise lightly until it stops.
Do NOT tighten or torque the sleeve. Over-tightening may crush or deform the sleeve.
Step 9 — Install Injector Seal
Install a new injector seal onto the injector. Use a proper 3-stage injector seal compression tool. Immediately install the injector into the newly installed sleeve.
Step 10 — Repeat as Needed
Repeat all steps for any additional cylinders requiring repair.
5. Post-Installation Requirements
Allow 3 complete heat cycles before applying boost. A heat cycle consists of fully warming the engine to operating temperature and then allowing it to cool completely. This ensures proper seal seating.
This item will have no warranty. As it is a repair kit that the end user installs, we give no warranty. Use at your own risk. It is to be used as a last resort to keep you from having to replace your cylinder head from a damaged injector bore. PPI or Bavarian Magazine LLC makes no warranty on the product and are not responsible for improper install or damage to vehicle or body. *Use at your own risk!