You are looking at a chassis block / piston rods /cylinder assembly and rear motor bracket taken from a Hornby LMS 8FR2228.
Hornby LMS 8F Body BR Black No 48758 Very good condition
Hornby LMS Black 5 4F 8F 00 Gauge Model Railway Tender S4539 Chassis
Hornby L6480 rear motion bracket for LMS 8f locos.
Hornby R315 LMS 8F Class Loco 8193 Black, OO Scale Good Runner Tested