MAP Billet EcoBoost Rear Main Seal
This installation guide is designed to walk you through the proper procedure for installing the MAP Billet Rear Main Seal on 2.3L EcoBoost engines. Following these steps ensures proper sealing, helps prevent oil leaks, and reduces the risk of rework during engine installation.
The MAP Billet Rear Main Seal is available to order directly through us at EMS. If you have any questions about fitment or installation, our team is here to help.
A full installation video is currently available on our Instagram, Facebook and YouTube.
MAP Billet EcoBoost Rear Main Seal INSTALLATION:
Tools You’ll Need
- Ford RTV — Part # TA-357
- Ford Prep Wipes
- 5mm Allen socket
- Torque wrench
- Blue Loctite
- Assembly lube or engine oil
Step 1
Clean block and seal surfaces
Remove all oil and debris using Ford Prep Wipes to ensure proper sealing.
Step 2
Let surfaces dry
Allow cleaner residue to fully evaporate before applying RTV.
Step 3
Lube the crankshaft end
Apply a thin layer of assembly lube or engine oil to prevent seal damage during install.
Step 4
Apply Ford RTV TA-357
Use a generous bead around the seal perimeter and oil pan junction to prevent leaks.
Step 5
Install seal at an angle
Set the seal at an angle to avoid wiping RTV off the oil pan surface.
Step 6
Apply blue Loctite to bottom two bolts only
These bolts go into the main girdle and require thread locker for proper retention.
Step 7
Hand-start all bolts
Thread all bolts by hand first to ensure proper alignment and avoid cross-threading.
Step 8
Torque to 89 in-lb
Tighten all bolts in a cross pattern to evenly seat the seal.
Step 9
Final inspection
Verify seal is flush, bolts are torqued, and RTV is properly applied.
Need Help Finalizing Your Setup?
If you have questions about configuration, compatibility, or dialing in your setup, contact us directly.
We’re available to help you spec the system correctly based on your build.
Call us (423) 500-4901 or
Email us at sales@emsinc-tn.com
WWW.EMSINC-TN.COM
