That number is molded on the casting, must be right. Here is all the Navistar numbers for the IDI and IDIT. Click on the URL
[PDF] Navistar IDI & IDITFile Format: PDF/Adobe Acrobat - Quick View
Navistar Indirect Injected (IDI & IDIT) 6.9L/7.3L Engines. Complete Drop-Ins ...... 1804357C4. 1983-94. Manifold, Intake, 6.9L/7.3L, International ...
www.diesel-connection.com/documents/remanAppNPrice.pdf
N 1 RV1805241C1J 1805241C1 1983-94 Bolt, Intake Screen, 6.9L/7.3L, International No Core $4.00
N 2 RV1805055C2J 1805055C2 1983-94 Gasket, Exhaust, 6.9L/7.3L, International No Core $9.00
N 1 RV1813067C92J 1813067C92 1983-94 Gasket, Valley Pan, 6.9L/7.3L, International No Core $41.00
N 1 RV1805054C3J 1805054C3 1983-94 Manifold, Exhaust, Left, 6.9L/7.3L, International No Core $59.00
N 1 RV1800708C2J 1800708C2 1983-94 Manifold, Exhaust, Right, 6.9L/7.3L, International No Core $59.00
N 1 RV1804357C4J 1804357C4 1983-94 Manifold, Intake, 6.9L/7.3L, International No Core $176.00
N 1 RV1805240C1J 1805240C1 1983-94 Screen, Intake, 6.9L/7.3L, International No Core $4.00
N 1 RV1804288C1J 1804288C1 1983-94 Strap, 6.9L/7.3L, International No Core $4.00
1. Kit contains the following gaskets: 2 cylinder head, 2 exhaust manifold, 1 front header oil cooler, 1 fuel pump mounting, 1 left front crankcase cover, 1 oil filter adapter, 1 oil
pan, 1 oil pump inlet tube, 1 rear cover, 1 right front crankcase cover, 1 ring seal, 1 thermostat, 1 timing cover seal, 2 valve cover, 1 valve cover nut washer, 1 water inlet, 1
water pump, and all applicable o-rings.
International Truck
Manifolds & Components
Confidential & Proprietary 05FIPRICE-B 4/4/05 TD
Navistar Indirect Injected (IDI) 6.9L/7.3L Subassemblies and Component Parts
Ford E & F Series