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EXPANSION PLUG SIZE CHART
EXPANSION PLUG ENGINE KITS
 
EXPANSION PLUG SIZE CHART
CUP PLUGS - SHALLOW CUP PLUGS - CONCAVE PLUGS
RUBBER SEAL EXPANSION PLUGS
 
CUP PLUGS
ERSCO No. Size O.D. ERSCO No. Size O.D. ERSCO No. Size
CP-100 1/4" .260 CP-178 1-45/64" 1.703 CP-161 17.27mm
CP-103 5/16" .322 CP-179 1-3/4" 1.760 CP-392 18mm
CP-122 3/8" .385 CP-180A 1-49/64" 1.762 CP-391 20mm
CP-123 13/32" .440 CP-152 1-25/32"   CP-385 21.44mm
CP-180 7/16" .477 CP-153 1-13/16"   CP-415 22mm
CP-190 29/64" .461 CP-181A 1-7/8" 1.885 CP-395 24mm
CP-184 1/2" .523 CP-182A 1-15/16" 1.943 CP-386 24.18mm
CP-187 17/32" .541 CP-183A 1-61/64" 1.953 CP-387 24.76mm
CP-115 9/16" .572 CP-200 1-31/32" 1.970 CP-164 25mm
CP-183 19/32" .603 CP-155 1-63/64" 1.961 CP-112 26mm
CP-167 5/8" .635 CP-146 2" 2.005 CP-388 26.9mm
CP-185 21/32" .664 CP186A 2-1/64" 2.017 CP428 28mm
CP-166 43/64" .666 CP-192 2-1/16" 2.070 CP-475 28.04mm
CP-193 45/64" .704 CP-202 2-3/32" 2.100 CP-177 29.08mm
CP-182 3/4" .760 CP-423 2-1/8" 2.150 CP-393 30mm
CP-189 49/64"   CP-156 2-9/64" 2.148 CP-429 31.5mm
CP-105 13/16" .825 CP-204 2-3/16" 2.197 CP-394 32mm
CP-186 7/8" .885 CP-188 2-1/4" 2.260 CP-410 34.3mm
CP-173 29/32" .916 CP-157 2-1/2" 2.510 CP-124 35mm
CP-194 59/64" .906 CP-206 2-5/8" 2.635 CP-125 36.5mm
CP-169 15/16" .947 CP-195 2-11/16" 2.697 CP-128 38mm
CP-170 1" 1.010 CP-375 6.58mm   CP-397 40mm
CP-176 1-1/16" 1.062 CP-376 7.95mm   CP-132 40.16mm
CP-171 1-1/8" 1.135 CP-377 8.05mm   CP-407 42.3mm
CP-168 1-3/16" 1.192 CP-374 12mm   CP-139 44mm
CP-173A 1-7/32" 1.226 CP-378 12.14mm   CP-436 44.83mm
CP-158 1-1/4" 1.260 CP-413 12.7mm   CP-398 45mm
CP-120 1-5/16" 1.322 CP-412 12.9mm   CP-399 47mm
CP-175 1-3/8" 1.385 CP-379 13.08mm   CP-438 48mm
CP-151 1-29/64" 1.438 CP-380 14.10mm   CP-143 49.5mm
CP-181 1-1/2" 1.510 CP-411 14.4mm   CP-400 50mm
CP-106 1-9/16" 1.572 CP-159 14.6mm   CP-437 51mm
CP-104 1-5/8" 1.635 CP-160 15.8mm    
CP-104-OS 1-5/8-O" 1.648 CP-414 16mm    
*  Add "B" Suffix to ERSCO Number to order Brass Expansion Plugs
 
SHALLOW CUP PLUGS
ERSCO No. Size O.D. ERSCO No. Size O.D. ERSCO No. Size O.D.
SP-310 29/64" .477 SP-332 1-45/64" 1.703 SP-209 2-3/32" 2.098
SP-420 1/2" .510 SP-220 1-47/64" 1.745 SP-462 2-7/64" 2.109
SP-154 17/32" .541 SP-165 1-3/4" 1.760 SP-307 2-1/8" 2.135
SP-301 11/16" .697 SP-465 1-49/64" 1.762 SP-466 2-9/64" 2.140
SP-443 13/16" .823 SP-253 1-51/64" 1.802 SP-210 2-5/32" 2.156
SP-194 1" 1.010 SP-203 1-13/16" 1.808 SP-390 2-3/16" 2.193
SP-172 1-1/8" 1.135 SP-303 1-29/32" 1.902 SP-381 2-7/32" 2.228
SP-201 1-1/4" 1.260 SP-464 1-59/64" 1.931 SP-247 2-1/4" 2.260
SP-421 1-21/64" 1.338 SP-251 1-61/64" 1.953 SP-422RT** 2-3/8" 2.386
SP-196 1-3/8" 1.385 SP-114 1-31/32" 1.978 SP-422 2-3/8" 2.386
SP-197 1-31/64" 1.494 SP-205 2" 2.005 SP-463 2-1/2" 2.510
SP-198 1-1/2" 1.510 SP-110 2-1/64" 2.017 SP-268 2-3/4" 2.760
SP-199 1-5/8" 1.640 SP-305 2-3/64" 2.056 **RT = Reverse Taper
SP-382 1-41/64" 1.642 SP-123 2-1/16" 2.070  
*  Add "B" Suffix to ERSCO Number to order Brass Expansion Plugs
 
CONCAVE PLUGS
ERSCO No. Size O.D. ERSCO No. Size O.D. ERSCO No. Size O.D.
FP-416 3/8" .375 FP-126 1-3/16" 1.187 FP-127 2-1/16" 2.062
FP-133 7/16" .437 FP-130 1-1/4" 1.250 FP-227 2-1/8" 2.125
FP-134 1/2" .500 FP-130A 1-5/16" 1.312 FP-147 2-1/4" 2.250
FP-135 9/16" .562 FP-129 1-3/8" 1.375 FP-242 2-3/8" 2.375
FP-216 5/8" .625 FP-148 1-7/16" 1.437 FP-228 2-1/2" 2.500
FP-136 11/16" .687 FP-221 1-31/64" 1.484 FP-311 18mm  
FP-187 3/4" .750 FP-144 1-1/2" 1.500 FP-404 21mm  
FP-417 13/16" .812 FP-231 1-9/16" 1.562 FP-402 24mm  
FP-138 7/8" .875 FP-129A 1-5/8" 1.625 FP-396 35mm  
FP-140 15/16" .937 FP-419 1-47/64" 1.734 FP-403 40mm  
FP-192 1" 1.000 FP-131 1-3/4" 1.750 FP-313 42mm  
FP-418 1-1/32" 1.031 FP-145 1-7/8" 1.875 FP-395 45mm  
FP-141 1-1/16" 1.062 FP-226 1-15/16" 1.937 FP-315 52mm  
FP-142 1-1/8" 1.125 FP-107 2" 2.000  
*  Add "B" Suffix to ERSCO Number to order Brass Expansion Plugs
 
RUBBER SEAL EXPANSION PLUGS
ERSCO No. Size   ERSCO No. Size   ERSCO No. Size  
MA-401 3/4"   MA-406 1-3/8"   MA-411 2"  
MA-402 7/8"   MA-407 1-1/2"   MA-412 2-1/8"  
MA-403 1"   MA-408 1-5/8"   MA-413 2-1/4"  
MA-404 1-1/8"   MA-409 1-3/4"    
MA-405 1-1/4"   MA-410 1-7/8"    
 
EXPANSION PLUG ENGINE KITS
AMERICAN MOTORS - AUDI - AUSTIN - BUICK - CADILLAC
CATERPILLAR - CHEVROLET - CHRYSLER - CONTINENTAL - CUMMINS
DETROIT DIESEL - FIAT - FORD - FALCON (Australian) - GMC - HONDA
HOLDEN (Australian) - INTERNATIONAL (Navistar) - M.G. - MAZDA
NISSAN (Datsun) - OLDSMOBILE - PONTIAC - RENAULT - SATURN (GM)
THERMO KING - TOYOTA - TRIUMPH - VOLKSWAGEN - VOLVO
 
AMERICAN MOTORS
Year Cylinder Application Steel Brass
1983-90 4 150 OHV (2.46) EPK-129 EPK-129B
1980-83 4 151 Pontiac Engine EPK-74 EPK-74B
1977-79 4 121 EPK-28 EPK-28B
1940-67 4 Jeep 134 EPK-63 EPK-63B
1987-92 6 242 (4.0) EPK-126 EPK-126B
1958-59 6 196, 199, 232, 258 EPK-1 EPK-1B
1960-84 8 290, 304, 343, 360, 390, 401 EPK-2 EPK-2B
1957-66 8 250, 287, 327 EPK-59 EPK-59B
 
AUDI
Year Cylinder Application Steel Brass
1974-79 4 Fox 1500cc, 1600cc EPK-28 EPK-28B
 
AUSTIN
Year Cylinder Application Steel Brass
1973-75 4 Marina 1800cc EPK-67 EPK-67B
 
BUICK
Year Cylinder Application Steel Brass
1980-92 4 173 (2.8) EPK-75 EPK-75B
1982-89 4 110 (1.8), 121 (2.0) EPK-96 EPK-96B
1985-89 4 121 (2.0) EPK-95 EPK-95B
1974-79 4 1.8 Liter Opel EPK-29 EPK-29B
1968-75 4 1.9 Liter Opel EPK-30 EPK-30B
1986-92 4 151 (2.5) EPK-120 EPK-120B
1978-85 4 151 (2.5) EPK-74 EPK-74B
1991-93 6 204 (3.3) EPK-123 EPK-123B
1985-92 6 231 (3.8) EPK-119 EPK-119B
1975-84 6 181, 196, 231, 252, (3.8) EPK-53 EPK-53B
1964-67 6 225 EPK-57 EPK-57B
1975-82 8 260 EPK-58 EPK-58B
1961-63 8 215 EPK-62 EPK-62B
1977-81 8 301 EPK-64 EPK-64B
1968-92 8 267 (4.4), 305 (5.0), 350L (5.7) EPK-8 EPK-8B
1966-82 8 340 (5.6), 350HJX (5.7) EPK-3 EPK-3B
1967-79 8 400, 425, 430, 455 EPK-4 EPK-4B
1977-79 8 403 EPK-76 EPK-76B
 
CADILLAC
Year Cylinder Application Steel Brass
1985-89 4 121 (2.0) EPK-95 EPK-95B
1982-89 4 110 (1.8), 121 (2.0) EPK-96 EPK-96B
1980-92 6 173 (2.8) EPK-75 EPK-75B
1982-88 8 (252) Aluminum Engine EPK-133 N/A
1968-92 8 307 (5.0), 350B, 350H, 350R EPK-25 EPK-25B
1968-84 8 368, 425, 472, 500 EPK-5 EPK-5B
 
CATERPILLAR
Year Cylinder Application Steel Brass
  4 3304 Head EPK-80SS  
  6 D343 Head EPK-78SS  
  6 3306 Head EPK-81SS  
  6 & 8 3406, 3408 Head EPK-82SS  
  8 3208 EPK-79SS  
 SS = Stainless Steel Plugs
 
CHEVROLET
Year Cylinder Application Steel Brass
1972 4 Luv 1800cc (Series 1) EPK-29 EPK-29B
1973-75 4 Luv 1800cc (Series 2-4) EPK-66 EPK-66B
1976-82 4 Luv 1800cc (Series 5-12) EPK-90 EPK-90B
1976-87 4 85 (1.4), 98 (1.6) EPK-65 EPK-65B
1982-89 4 110 (1.8), 121 (2.0) EPK-96 EPK-96B
1985-89 4 121 (2.0) EPK-95 EPK-95B
1985-89 4 92 (1.5) EPK-104 EPK-104B
1986-92 4 151 (2.5) EPK-120 EPK-120B
1978-85 4 151 (2.5) EPK-74 EPK-74B
1980-92 6 173 (2.8) EPK-75 EPK-75B
1991-93 6 204 (3.3) EPK-123 EPK-123B
1989-93 6 (3.1) V-6 EPK-128 EPK-128B
1935-52 6 216 EPK-60 EPK-60B
1985-92 6 231 (3.8) EPK-119 EPK-119B
1975-84 6 181, 196, 231, 252 (3.8) EPK-53 EPK-53B
1938-62 6 235, 261 EPK-6 EPK-6B
1962-86 6 153, 194, 230, 250(4.1), 292 (4.8) EPK-7 EPK-7B
1975-92 6 200 (3.3), 229 (3.8), 262 (4.3) 85 only EPK-87 EPK-87B
1985-92 6 262 (4.3) EPK-99 EPK-99B
1968-85 8 265, 267, 283, 302, 305 (5.0), 307 (5.0)
  327, 350L (5.7)
EPK-8 EPK-8B
1986-92 8 305 (5.0), 350 (5.7) EPK-100 EPK-100B
1970-79 8 400 w/ 2BC EPK-9 EPK-9B
1965-88 8 366, 396, 400w/ 4BC, 402, 427, 454 (7.4) EPK-10 EPK-10B
 
CHRYSLER
Year Cylinder Application Steel Brass
1978-83 4 1040HC (1.7) EPK-91 EPK-91B
1977-83 4 98 (1.6) EPK-31 EPK-31B
1974-79 4 122 (2.0) EPK-32 EPK-32B
1978-89 4 156 (2.6) EPK-89 EPK-89B
1978-83 4 (1.6) 1600cc Audi Engine EPK-28 EPK-28B
1987-92 4 181 (3.0) EPK-127 EPK-127B
1981-92 4 135 (2.2), 153 (2.5) EPK-88 EPK-88B
1960-83 6 170, 196, 225 (3.7) EPK-13 EPK-13B
1934-59 6 230 EPK-61 EPK-61B
1990-92 6 201 (3.3) EPK-105 EPK-105B
1993 6 215 (3.5) EPK-125 EPK-125B
1990-92 6 239 (3.9) EPK-106 EPK-106B
1987-92 6 242 (4.0) EPK-126 EPK-126B
1957-89 8 273, 318, 340, 360 (5.9) EPK-11 EPK-11B
1958-78 8 381, 383, 400, 413, 426, 440 EPK-12 EPK-12B
 
CONTINENTAL
Year Cylinder Application Steel Brass
  4 Y112 EPK-49 N/A
  4 F163 EPK-50 N/A
  6 F227 EPK-51 N/A
  6 F245 EPK-52 N/A
 
CUMMINS
Year Cylinder Application Steel Brass
  8 V8 210, VT555 Head EPK-83SS  
SS = Stainless Steel
 
DETROIT DIESEL
Year Cylinder Application Steel Brass
  6 6V53 Head EPK-84SS  
  8 8V71 Block EPK-85SS  
  8 8V92 Block EPK-86SS  
SS = Stainless Steel
 
FIAT
Year Cylinder Application Steel Brass
1966-73 4 817cc, 843cc, 903cc EPK-73 EPK-73B
1972-83 4 1290cc, 1498cc, 1765cc EPK-36 EPK-36B
 
FORD
Year Cylinder Application Steel Brass
1971-92 4 98 (1.6), 116 (1.9) EPK-107 EPK-107B
1971-85 4 98 (1.6) EPK-37 EPK-37B
1972-83 4 110 (1.8), 121 (2.0) Courier EPK-41 EPK-41B
1971-74 4 122 (2.0) EPK-38 EPK-38B
1983-89 4 122 (2.0) Truck EPK-39 EPK-39B
1974-92 4 140 (2.3) Exc. H.S.C. EPK-39 EPK-39B
1986-91 4 153 (2.5) H.S.C EPK-108 EPK-108B
1974-79 6 171 (2.8) EPK-40 EPK-40B
1963-84 6 144, 170, 200 w/ 1-3/4" Block Plugs EPK-14 EPK-14B
1952-64 6 215, 223, 262 EPK-15 EPK-15B
1965-79 6 240, 300 EPK-16 EPK-16B
1988-89 6 179 (2.9) EPK-109 EPK-109B
1986-92 6 180, 182 (3.0) EPK-118 EPK-118B
1982-92 6 232 (3.8) EPK-94 EPK-94B
1987-90 6 300 (4.9) EPK-117 EPK-117B
1986-91 6 474 (7.8) Diesel       (Stainless Steel) EPK-121SS  
1991-92 8 281 (4.6) EPK-122 EPK-122B
1962-92 8 221, 255, 260, 289, 302 (5.0), 351W (5.8) EPK-17 EPK-17B
1970-82 8 351C (5.8), 351M (5.8), 400 EPK-18 EPK-18B
1958-71 8 330, 332, 352, 360, 361, 390, 406, 427, 428 EPK-19 EPK-19B
1939-62 8 239, 272, 292, 312 EPK-20 EPK-20B
1968-92 8 370, 429, 430, 460 (7.5),462 EPK-21 EPK-21B
1958-81 8 401, 475, 477, 534 EPK-27 EPK-27B
1980-88 8 421 (6.9) EPK-97 EPK-97B
 
FALCON (AUSTRALIAN)
Year Cylinder Application Steel Brass
1970-88 6 200, 250 EPK-102 EPK-102B
 
GENERAL MOTORS CORPORATION
Year Cylinder Application Steel Brass
1960-77 4 305, 351, 401, 478 EPK-22 EPK-22B
1985-92 8 379 (6.2) Diesel EPK-98 EPK-98B
 
HONDA
Year Cylinder Application Steel Brass
1980-83 4 1335cc (1.3) EPK-130 EPK-130B
1973-87 4 1488cc, 1597cc, 1751cc EPK-42 EPK-42B
1983-89 4 1829cc (1.8), 119 (2.0) EPK-110 EPK-110B
 
HOLDEN (AUSTRALIAN)
Year Cylinder Application Steel Brass
1964-80 6 149, 161, 173, 179, 186, 208 EPK-101 EPK-101B
1970-89 8 253, 308 EPK-103 EPK-103B
 
INTERNATIONAL (NAVISTAR)
Year Cylinder Application Steel Brass
  4 152, 196 EPK-55 EPK-55B
  6 269, 282, 308, 372, 406, 450, 501 EPK-24 EPK-24B
  8 266, 304, 345, 392 EPK-23 EPK-23B
    404, 446 EPK-92 EPK-92B
    DT 466     (Stainless Steel) EPK-111SS  
 
M.G.
Year Cylinder Application Steel Brass
  4 (1.8) M.G.B EPK-67 EPK-67B
 
MAZDA
Year Cylinder Application Steel Brass
    1300, 1400, 1800cc EPK-41 EPK-41B
1976-80   1272cc, 1415cc EPK-112 EPK-112B
1979-82   1970cc EPK-113 EPK-113B
 
NISSAN (Datsun)
Year Cylinder Application Steel Brass
1971-82 4 A-12 (1.2), A-13 (1.3), A-14 (1.4), A-15 (1.5) EPK-33 EPK-33B
1982-88 4 E-15 (1.5), E-16 (1.6) EPK-114 EPK-114B
1967-80 4 E-16 (1.6), L-18 (1.8), L-20B (2.0) EPK-34 EPK-34B
1969-83 6 L-24 (2.4), L-26 (2.6), L-28 (2.8), L-28E (2.8) EPK-35 EPK-35B
 
OLDSMOBILE
Year Cylinder Application Steel Brass
1982-89 4 110 (1.8), 121 (2.0) EPK-96 EPK-96B
1985-89 4 121 (2.0) EPK-95 EPK-95B
1986-92 4 151 (2.5) EPK-120 EPK-120B
1978-85 4 151 (2.5) EPK-74 EPK-74B
1980-92 6 173 (2.8) EPK-75 EPK-75B
1991-93 6 204 (3.3) EPK-123 EPK-123B
1989-93 6 (3.1) V-6 EPK-128 EPK-128B
1985-92 6 231 (3.8) EPK-119 EPK-119B
1975-84 6 181, 196, 231, 252 (3.8) EPK-53 EPK-53B
1975-82 8 260 EPK-58 EPK-58B
1968-92 8 350G (5.7), 350L (5.7) EPK-8 EPK-8B
1968-92 8 307, 330, 350B, N, R (5.7), 400 (except 75)
  425, 455
EPK-25 EPK-25B
1977-79 8 403 EPK-76 EPK-76B
 
PONTIAC
Year Cylinder Application Steel Brass
1976-87 4 85 (1.4), 98 (1.6) EPK-65 EPK-65B
1987-90 4 122 (2.0) OHC Brazil EPK-131 EPK-131B
1982-89 4 110 (1.8), 121 (2.0) EPK-96 EPK-96B
1985-89 4 121 (2.0), 122 (2.0) 1987 Only EPK-95 EPK-95B
1986-92 4 151 (2.5) EPK-120 EPK-120B
1978-85 4 151 (2.5) EPK-74 EPK-74B
1980-92 6 173 (2.8) EPK-75 EPK-75B
1989-93 6 (3.1) V-6 EPK-128 EPK-128B
1991-93 6 204 (3.3) EPK-123 EPK-123B
1985-92 6 231 (3.8) EPK-119 EPK-119B
1975-84 6 181, 196, 231, 252 (3.0), (3.8) EPK-53 EPK-53B
1977-81 8 301 (5.0) EPK-64 EPK-64B
1968-92 8 305, 350L (5.7) EPK-8 EPK-8B
1968-92 8 350B, N, R, X, (5.7) EPK-25 EPK-25B
1959-79 8 326, 350P, 389, 400, 421, 428, 455 EPK-26 EPK-26B
 
RENAULT
Year Cylinder Application Steel Brass
1983-87 4 85 (4.1) EPK-132 EPK-132B
1968-92 4 105 (1.7) EPK-115 EPK-115B
 
SATURN (G.M.)
Year Cylinder Application Steel Brass
1991-93 4 116 (1.9) EPK-124 EPK-124B
 
THERMO KING
Year Cylinder Application Steel Brass
    Isuzu Engine (Block & Head)    (Stainless Steel) EPK-93SS  
 
TOYOTA
Year Cylinder Application Steel Brass
1980-89 4 1AC, 3AC (1.5), 4AC, 4ALC (1.6) EPK-116 EPK-116B
1968-84 4 K, KC, 3K, 3KC, 4KE EPK-43 EPK-43B
1970-83 4 2TC, 3TC EPK-44 EPK-44B
1965-70 4 3RC EPK-45 EPK-45B
1971-75 4 8, 18RC EPK-46 EPK-46B
1974-85 4 20R, 22R, 22REC EPK-68 EPK-68B
1975-87 6 2F EPK-70 EPK-70B
1967-88 6 2M, 4M, 4ME, 5ME, 5MGE EPK-77 EPK-77B
 
TRIUMPH
Year Cylinder Application Steel Brass
1973-81 4 1500cc (1.5) EPK-71 EPK-71B
1970-76 6 2500cc (2.5) EPK-72 EPK-72B
 
VOLKSWAGEN
Year Cylinder Application Steel Brass
1974-83 4 1500cc, 1600cc EPK-28 EPK-28B
 
VOLVO
Year Cylinder Application Steel Brass
1962-75 4 B-18 (1700cc) (1.8), B-20 (1986cc) (2.0) EPK-47 EPK-47B
1969-90 6 B-30 (2979cc) (3.0), B-21 (2127cc) (2316cc) EPK-48 EPK-48B
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