How do you no which type of engine you have,I am ordering COP'S for my truck and this question came up.Not sure which 5.4 I have,thats my vin number below.
THANKS
VIN# 1FTRX07L9XKA38366
1999 V8-330ci 5.4L F/I Vin L
1999 V8-330ci 5.4L CNG/FI Vin M
1999 V8-330ci 5.4L BIFUEL/FI Vin Z

HEI Ignition Coil Adapter

 

your engine is the L you have listed. The eighth caracter in the VIN is your engine identification.

 

But they all take the same COPS...

 

Dg - 508's ( :

 

why 2 threads on the same subject in the same room????

 

I would reccomend not showing your entire Vin code up for security reasons. Just ask the question, which character is my engine one etc...