<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body dir="auto"><div dir="auto">The housing on my C5OE-9425D intake has C5OE-8592A embossed on it. It has the recess and is made aluminum. Magnet don't stick to it.</div><div dir="auto"><br></div><div dir="auto">Jim D</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div id="composer_signature" dir="auto"><div style="font-size:12px;color:#575757" dir="auto">Sent from my Galaxy</div></div><div dir="auto"><br></div><div><br></div><div align="left" dir="auto" style="font-size:100%;color:#000000"><div>-------- Original message --------</div><div>From: Ron Fraser <rfraser@bluefrog.com> </div><div>Date: 3/14/22 11:28 AM (GMT-05:00) </div><div>To: tigers@Autox.Team.Net </div><div>Subject: [Tigers] thermostat housing </div><div><br></div></div><div class="WordSection1"><p class="MsoNormal">Are there any casting number or markings on the thermostat housing used on the C5OE-9425D intake manifold?</p><p class="MsoNormal"> </p><p class="MsoNormal">This intake manifold is mostly in the B19KC engine group. It might be a Tiger specific intake manifold.</p><p class="MsoNormal"> </p><p class="MsoNormal">This is the time frame that Ford moved the thermostat recess from the intake manifold to the thermostat housing.</p><p class="MsoNormal"> </p><p class="MsoNormal">I would also like to know if that thermostat housing is made of cast iron or aluminum.</p><p class="MsoNormal"> </p><p class="MsoNormal">The original Tiger engine survey form is online - <span class="MsoHyperlink"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:windowtext;text-decoration:none"> </span></span><a href="https://teae.org/tiger-engine-study/"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Tiger Engine Study - TigersEast AlpinesEast (teae.org)</span></a></p><p class="MsoNormal"> </p><p class="MsoNormal">Please participate – the more information gathered the better the research quality.</p><p class="MsoNormal"> </p><p class="MsoNormal">Thank you</p><p class="MsoNormal">Ron Fraser</p><p class="MsoNormal"> </p><p class="MsoNormal"> </p></div></body></html>