Count me "wrong". My 1985 has a Sanden H13 on Rollguy's brackets. My 1984 has the R4 that came with it and will stay such because I have another used R4 (or 2?) plus a new R4. Both cool the same, best I can tell (given the quirky climate controls). Also "wrong" because I use Duracool hydro-carbon refrigerant and PAO 68 oil, which could be why my R4 lasts thru our severe Central Valley summers (>110 F).

I went thru the R4 sealing washers issues last summer, and share my notes below. I found the washers at a local NAPA (using their online PN search), and they were in an old box. I am also trying to attach a pdf from Four Seasons that details it. But, this is for a factory Harrison. Apparently, many replacement compressors have different seal pads, so you might need to keep researching.


Suction port:
Four Seasons 24358, yellow
NAPA PN 407279
AutoACRepairs PN GA4508, $3
GM PN 2724888
1.32" OD (33.2 mm) x 0.12" th (3 mm), ~0.585 " ID
compressor hole recessed ~0.08"

HP outlet port:
Four Seasons 24357, green
NAPA PN 407278
AutoACRepairs PN GA4506, $3
GM PN 2724890
1.18" OD (29.9 mm) x 0.216" th (5.5 mm), 0.61" ID
compressor hole recessed ~0.16"

Included in some kits, but not used:
Four Seasons 24356, red
AutoACRepairs PN GA4507
GM PN 2724889
1.18" OD (29.9 mm) x 0.15" th (3.8 mm), 0.61" ID

3-seal kit (red, grn, & yell washers, w/ inserts, use only grn & yell):
Four Seasons 24342
AC Delco PN 15-20058
AutoACRepairs GA 4504-KT, $9
GM PN 2724887
O'Reilly's PN 24342 $15

Red & grn washers only:
CompressorWorks PN 620230


Oil:
Total system 8 oz
Makeup for:
drier 0.3 oz
evaporator 1.4 oz
condenser 0.7 oz
used compressor 2.4 oz
new compressor 6 oz

Attached Files

FOUR SEASONS 4S 319-4S GM SEALING WASHERS.PDF (79.5 KB, 565 views)

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans