I found a new motorcraft EGR valve part number
CX-1119

1988 E150 with 5.0 engine


This is the part
BRAND: FORD
STAMP FORD PART NUMBER: E7PE-9H473-E4A
MOTORCRAFT PART NUMBER : CX-1119

this is additional information
FORD MOTORCRAFT PART NUMBERS : E6PE9H473B2A, E6PE9H473B4A, E6PE9H473BA, E6PE9H473E2A, E6PE9H473E4A, E6PE9H473EA, E6PZ9H473B, E7PE9H473E2A, E7PE9H473EA, E7TE9F483F2A

INTERCHANGEABLE PART NUMBER(S): 41210, EGR231, 70-5716, 214-9090, 98449, 10604


I called a ford dealer and they told me the part number for my van is E7TE9F483F2A
that is one of the numbers listed above I just need to verify that the CX-1119/E7PE-9H473-E4A will work

Amazon says it fits, RA says it fits, but on the ebay compatibility list, the list skips over 1988 year models for some reason.
AZ lists part #EGR231 which is one of the interchange numbers listed