Jeep Parts Wiki | Ford Parts Wiki


Home | Search | Browse | Marketplace | Messages | FAQ
Query String
Book Type
Single Book
Books Covering
Books Covering
Books Covering
Book Page Context
Bolt 37 39 PASS l TON 3 SPD 5930 25 Frt 373536 Rr 602462 1 10 75 40 48 PASS 40 4 7 Q TON 3 SPD ...
SPD 2nd Ser front end finger dia 773 3708961 1 8 90 54 55 2 TON lst Ser REPAIR KIT front rear and inter finger dia 55 57 2 SPD 2nd Ser ...
rear 3741635 2 10 95 55 57 PASS TON REPAIR KIT front and rear 55 57 TON 2nd Ser front end 55 57 M Ser 3B hvy duty 4 SPD 2nd Ser rear end finger
95 55 56 PASS 1 TON O D 131 long 6 splines 3715095 1 10 20 55 TON hvy duty lst Ser 55 57 COMM hvy duty 2nd Ser 1 11 1 Q long ...
SPD plain 2 I D x 11 gg O D x thick 590936 1 10 40 54 PASS 1 Q TON 3 SPD 48 54 1 TON 3 SPD 54 COMM 3 SPD hvy duty ...
SPD chamter 3667936 1 25 48 57 ALL 4 SPD 1 54 57 ALL w H T exc TON 55 57 TON 3 SPD hvy duty 55 57 TON 3 SPD hvy duty 2nd Ser
SPD 46 55 COMM UTIL lst Ser exc TON 2 SPD 55 57 COMM UTIL 2nd Ser exc TON SEAL oil pinion flange 21 I D 3653618 1 2 05 41 42 COMM exc TON ...
Ser 4 exc 2 SPD cast 3653616 3653616 1 2 10 46 57 1 I TON 57 Ser 4 exc 2 SPD cast 3682199 3682199 1 2 10 55 57 2 SPD 2nd Ser ...
UTILITY lst Ser 55 UTILITY 2nd Ser exc 2 SPD 56 1 1 TON exc 2 SPD 56 2 TON exc 2 SPD hvy duty BOLT retainer
COMM 2nd Ser exc 1 TON 4 SPD D D 57 Ser 4 w H T w pin front 10 O L 3717933 1 95 55 57 COMM 2nd Ser exc Prop Brake rear ...
SPD 2nd Ser w pin front lower 6 O L 3721634 1 2 25 55 57 D D exc 4 SPD 2nd Ser front upper idler 31 O L 3721631 1 95 56 1 TON ...
TON 2nd Ser exc TON 4 SPD D D 55 57 1 1 TON exc 4 SPD 2nd Ser front 42 O L 3717937 1 40 55 57 D D exc 4 SPD 2nd Ser
hole ctr to ctr 2 3709337 1 85 54 TON 3 SPD hvy duty 54 55 4 1 TON 3 SPD hvy duty lst Ser 2nd and 3rd shifter shaft hole ...
TON 3 SPD hvy duty lst Ser 55 COMM 3 SPD hvy duty 6 cyl 2nd Ser 2nd and 3rd shifter shaft 3718478 1 90 55 COMM 3 SPD hvy duty ...
2nd Ser shifter cast 8615293 X 8615640 1 1 95 56 57 PASS exc P G 2nd and 3rd offset in lever 3728300 1 75 55 57 CORV 3 SPD
duty 2nd Ser 55 57 2 SPD 2nd Ser front brake riveted type 57 Ser 6 primary and secondary no color ident 3723922 t 1 15 50 57 PASS Li TON rear bonded type primary ...
Ser 55 56 UTILITY 2nd Ser exc 11vy duty 2 SPD rear brake color ident 3703917 T 1 16 35 53 55 UTILITY lst Ser 55 56 UTILITY 2nd Ser exc hvy duty 2 SPD front ...
brake primary and secondary 57 Ser 4 exc 2 SPD color ident 3703508 t 1 7 85 I 55 57 2 SPD 2nd Ser 55 56 2 TON hvy duty 2nd Ser front brake primary
UTIL exc 2 SPD 52 55 1 TON 1st Ser exc 2 SPD 11 teeth shaft hole 370446 4 3 75 39 42 2 SPD 9 teeth stmp ...
SPD Mech Shift 9 teeth stmp d 2233 Z 104 3682228 4 4 95 46 55 2 SPD Vac Shift 1st Ser 9 teeth stmp d 3683815 3683815 4 4 95 52 55 2 TON ...
2nd ser prod 57 Ser 4 exc 2 SPD 10 teeth shatt hole Z4 3697745 4 3 35 55 57 2 SPD 2nd Ser 55 56 2 TON hvy duty 2nd Ser 57 Ser
TON UTILITY lst Ser exc COE strg gear rubber 36 bend l1 I D x 48 55 1 11 TON 4 SPD lst Ser ...
TON lst Ser 54 55 1 TON 3 SPD hvy duty lst Ser strg gear rubber 36 bend 4 holes 3687205 1 60 53 57 CORV strg gear rubber 3706504 1 60 53 57 CORV ...
COMM 2nd Ser exc 4 SPD strg gear rubber black 3713192 1 60 55 57 COMM 4 SPD 2ndl Ser strg gear rubber black 3713820 1 60 55 56 UTILITY 2nd Ser
TON UTIL 4 SPD exc D D FF C RETAINER lever seal 5 O L 3729941 1 30 56 57 M 1 TON UTIL 4 SPD FFC RETAINER lever seal ...
Ser 61 6K brake pedal 3740580 1 40 48 PASS exc CONV ARM 3652825 1 1 75 49 54 PASS exc CONV Prod P B ARM lower half 3687985 1 1 80 49 54 CONV ...
PASS w P B Prod PEDAL ASSY 3710881 1 2 50 55 57 PASS exc Prod P B PEDAL ASSY 3708034 1 2 50 55 57 PASS w P B Prod PEDAL ASSY
ASSEMBLY SWITCH ASSY Parking Brake 55 57 ii TON 3 SPD 2nd Ser electric 987237 1 4 75 56 PASS electric 987441 1 4 25 57 PASS electric 987597 l 4 65 53 55 CORV ...
PASS 53 55 CORV 6 cyl FLASHER ASSY alarm 3705522 1 1 40 55 56 PASS 55 57 CORV LQ TON 3 SPD 2nd Ser FLASHER ASSY alarm 3711289 1 1 40 57 PASS FLASHER ...
COMM 1 TON 2nd Ser exc 4 SPD 55 57 L6 TON 4 SPD 2nd Ser w sector charcoal 3730093 1 4 80 55 57 D D 4 SPD 2nd Ser less sector
95 48 51 1 TON UTILITY exc D D COE 52 57 ALL w Prop Brake exc COE LOCK lever attach 358829 1 5 057 57 M TON 4 SPD 57 Ser 4 6 LOCK ...
TON 4 SPD D D 55 57 CORV 8 cyl 56 57 TON w H T lever pull rod dash LEQ sq 3719562 1 15 55 4 1 TON UTIL 4 SPD 2nd Ser ...
TON UTIL 4 SPD exc D D FFC lever 5 x 21Q 3729940 1 95 56 57 1 TON UTIL 4 SPD FFC lever 7 x 41Z 3732884 1 1 25 NOTE On some models
SPD Vac Shift stamped 3835 C 263 A20 3835 D 264 6100001 1 42 35 50 52 PASS w P G 53 PASS exc SDL 54 PASS 53 55 CORV cast 593009 identified by blue ...
TON procl cast 3702226 3707515 1 26 95 54 55 2 SPD Vac Shift lst Ser cast 3703727 3 707538 1 42 35 55 56 PASS exc O D 56 CORV cast ...
PASS O D 56 CORV 3 SPD cast 3707312 3707312 1 11 60 55 56 2 TON hvy duty 2nd Ser 57 Ser 6 exc 2 SPD cast
TON 54 PASS 4 CLAMP parking to flange plate two 1 55 TON lst Ser holes 1 between ctrs 3697399 2 30 55 ij 1 TON lst Ser 55 57 TON sgl wheel 2nd Ser ...
brkt 48 50 COMM UTILITY 49 53 PASS COMM 54 PASS parking brake cable to clamp 3718205 2 2 277 55 57 PASS 55 57 COMM 2nd Ser exc Prop Brake BOLT hand brake pulley ...
PASS WASHER use w 3682642 BOLT 3682643 2 2 277 4 834 SEAL Brake Cable 36 54 PASS 36 55 COMM lst Ser 53 55 CORV 55 57 1 TON 3 SPD 2nd Ser
COMM 4 SPD exc l TON 54 TON 4 SPD 591679 1 8 10 48 50 UTILITY 48 55 4 1 TON 4 SPD Ist Ser 55 57 TON 4 SPD ...
SPD cast 591673 591674 1 11 25 54 TON 3 SPD hvy duty 54 55 1 TON 3 SPD hvy duty lst Ser forged T89 B 7 3709332 1 12 95 54 TON ...
TON 3 SPD hvy duty 2nd Ser 3721040 1 20 80 55 57 ALL w H T 2nd Ser exc TON 8615579 1 21 00 55 57 Q4 1 TON 4 SPD 2nd Ser
95 55 UTILITY 2nd Ser exc H D Brake Booster to check valve rear x 40 dev length 3715858 1 95 55 2 TON w H D Brake Booster 2nd Ser to check valve rear ...
TON FITTING relay valve 609780 1 1 25 54 57 PASS w P B Prod FITTING relay valve 563730 1 80 55 57 2 TON w H D Brake Booster 2nd Ser FITTING relay valve ...
Ser exc COE 55 1 TON SBC 2 SPD 2nd Ser exc Pos Vent 55 2 TON SBC 2nd Ser exc hvy duty eng Pos Vent 56 57 1 TON SBC 2 SPD
TON hvy duty 2 SPD 2nd Ser 56 57 11g TON 2 SPD 57 Ser 6 HY A 305396 305396 ZD w spacer 442093 1 40 25 55 57 PASS 1 Q TON 56 57 CORV ...
PASS TON dia 347813 A R 03 5 451 KITS Propeller Shaft Bushing and Seal 34 39 UTILITY 6099311 1 2 65 37 39 PASS 609929 T 1 2 95 40 50 PASS lst design ...
Bushings 609930 T 1 2 95 40 COMM 41 50 TON exc EP Ist Design Slip Fit Bushings 609933 T 1 2 95 47 TON 3847423 T 1 2 90 50 PASS 2nd Design Press Fit Bushings
SPD AXLE Vac Shift TEE ASSY Bendix 374699 3847069 1 5 645 47 55 COMM UTILITY lst Ser exc 2 SPD 55 57 UTIL 6 cyl 2nd Ser exc 2 SPD TEE ASSY check valve ...
inch 3686181 1 95 55 57 PASS 8 cyl w P B Prod TEE ASSY pipes to carb 3718911 1 75 55 57 COMM 6 cyl w Brake Booster 2nd Ser exc Pos Vent ...
SPD TEE ASSY check valve 3719508 1 3 25 56 57 COMM 8 cyl w Brake Booster exc D D TEE manifold 56 57 1 TON 8 cyl 2 SPD w Brake Booster check valve
SPD 6 cyl 2nd Ser exc D D upr 2nd and 3rd 9 O L 3723375 1 55 55 COMM 3 SPD hvy duty 6 cyl 2nd Ser exc D D lwr 2nd ...
SPD 2nd Ser upr 2nd and 3rd 22 dev length 3721285 1 90 55 D D 3 SPD 2nd Ser exc hvy duty lwr 2nd and 3rd 24 dev length ...
95 55 57 D D w H T 2nd Ser shifter 48 dev length 3720444 1 5 25 55 57 D D w H T 6 cyl 2nd Ser throttle valve lever control
TON lst Ser exc COE 53 55 1 TON hvy duty lst Ser forged 3698182 3698182 1 48 75 53 55 1 1 TON lst Ser exc D D SBC hvy duty forged ...
TON 2nd Ser forged 3712013 3712013 1 31 75 55 57 3 1 TON 2nd Ser exc D D forged 3711410 3711410 1 37 95 55 57 D D 2nd Ser forged ...
TON 2nd Ser exc hvy duty SBC forged 3711411 3711411 1 37 95 55 57 1 TON hvy duty 2nd Ser 55 57 SBC 2 TON 2nd Ser forged
TON A 45 3847304 1 92 48 51 16 TON 52 55 I TON lst Ser exc D D A foot oper 50 3689297 1 1 15 48 55 TON lst Ser ...
SPD 2nd Ser exc D D 57 D l 4 SPD 2nd design A lever 9 3713860 1 55 55 57 G l 1 TON w H T 3 SPD hvy duty 2nd Ser ...
SPD 2nd Ser C lever 13 3721630 1 75 55 57 K Ser 3F 3 SPD 2nd Ser exc hvy duty strap rear idler lever 3729308 1 95 55 57 D D 4 SPD 2nd
TON Ist Ser cast 3652280 604472 1 32 95 41 42 COMM exc TON cast 3657707 605340 1 19 90 41 42 UTILITY hvy duty 46 53 2 TON 55 57 1 TON 2nd Ser ...
SPD 6 37 teeth cast 3661871 605925 1 49 45 46 57 M 1 TON cast 3699535 3699534 1 28 35 46 55 2 SPD Vac Shift 1st Ser cast ...
CORV cast 3704477 3704476 1 24 50 54 56 2 TON prod cast 3702281 6 37 teeth 3702284 1 49 45 55 56 PASS 56 CORV cast 3707306 3711329 1 20 85 55 57 TON
TON 48 53 1 TON hvy duty 3681888 2 14 50 41 llg TON exc hvy duty V 42 50 1 TON exc hvy duty SBC 53 55 1 Q TON lst Ser ...
TON 2 SPD lst Ser exc SBC 55 57 1 TON 2nd Ser exc hvy duty SBC cast 3711400 3711400 2 11 00 54 55 1 TON SBC lst Ser exc 2 SPD ...
TON SBC 2 SPD lst Ser 54 55 2 TON 55 57 1 TON hvy duty 2nd Ser 55 57 1 TON SBC cast 3704482 dia flange side 5 3704482 2 14 50 55 PASS
Ser 3E w hvy duty 4 SPD 2nd Ser F 36 3707210 1 21 45 54 55 1 UQ TON exc 2 SPD 55 2 TON 2nd Ser prod exc Z 56 1 TON UTILITY ...
Prod exc Ser 6E 57 Ser 3G 4 exc 2 SPD F 47 3707211 1 24 15 54 55 S lst Ser exc 2 SPD ...
SPD Ist Ser E 48 16 3707200 1 23 05 54 55 2 TON 1st Ser exc S 2 SPD F 47 3707212 1 24 75 54 55 2 SPD Ist Ser
PASS 3703104 1 45 95 51 53 TON 3696164 1 46 50 51 55 1 TON exc 2 SPD lst Ser 3705371 1 107 25 51 53 2 TON exc 2 SPD ...
SPD 3702798 1 129 25 53 55 CORV 3707911 1 38 25 53 55 1 TON 1st Ser exc 1 TON D D 3700016 1 81 00 53 55 1 TON ...
TON 3707512 1 46 50 54 55 2 TON lst Ser exc 2 SPD 3707513 1 126 80 54 55 2 SPD lst Ser 3707514 1 129 25 55 56 PASS
SPD exc FK F hvy duty 55 57 CORV 3 SPD 3686833 1 35 48 57 ALL 4 SPD 591455 1 95 NOTE 1939 PASS interlock serviced only as part of Cover Group ...
PASS 3 SPD w drain and filler plugs cast 590822 590876 1 17 70 40 PASS 3 SPD w drain and filler plugs cast 591092 591093 1 17 70 41 48 PASS 3 SPD ...
COMM 3 SPD hvy duty forged T 89B 1 3709329 1 31 55 54 55 COMM w H T lst Ser 55 57 TON w H T 2nd Ser cast
SPD 2nd Ser upper 28 O L 3720452 1 3 80 55 56 D D w H T 2nd Ser 38 O L 3720443 1 4 15 55 COMM ...
Ser 3 3 SPD exc D D upper 18 O L 3717281 1 3 45 57 D D 3 SPD upper 25 O L 3737687 1 4 15 57 Ser ...
Ser 4 w H T 27 O L 3735889 1 4 15 40 48 PASS BUSHING 3 O L 3653736 1 95 50 54 PASS w P G 54 57 ALL w H T BUSHING
TON 2 SPD 54 55 2 TON lst Ser 55 56 2 TON hvy duty 2 SPD 2nd Ser 57 Ser 6 front drum flange 4 bolt circle 3707776 I 5 25 54 LQ TON ...
TON lst Ser exc 2 SPD 55 M I w hvy duty 4 SPD 2nd Ser 55 D D 1 TON UTILITY 2nd Ser exc F 2 SPD 56 57 Ser ...
TON lst Ser exc S 54 57 1 TON 2 SPD 56 2 TON hvy duty 2 SPD 57 Ser 6 ossy w sleeve rear 3707216 1 8 25 55 57 PASS 55 57 TON
SPD 2nd Ser 55 56 2 TON hvy cluty 2nd Ser 57 Ser 6 rear brake no color ident 3725022 T 1 16 35 TNOTE Facings must not be mixed on any one axle ...
95 5 020 PIVOT Broke Shoe 51 57 UTILITY rear 3694528 4 10 5 026 SPRING PIN KIT Brake Shoe 36 42 PASS COMM exc hvy duty 1 TON 46 50 PASS TON front ...
Brake Ist Ser 55 57 UTILITY 2nd Ser parking outer shoe 3695836 1 10 53 57 TON front cmd rear 53 57 1 TON front 36974281 A R 20 53 57 1 TON rear brake
TON lst Ser wheel hub ivory 9 O D 3719122 A R 3 45 55 TON lst Ser wheel hub white 9 O D 3719124 AR 3 45 55 M 1 TON lst Ser wheel ...
TON 2nd Ser wheel hub ivory 9 O D 3717766 4 3 45 55 56 TON 2nd Ser wheel hub chrome white 9 O D 3715992 4 3 80 55 l TON 2nd Ser wheel ...
TON 2nd Ser exc D D wheel hub chrome white 10I O D 3716785 4 5 00 55 PASS wheel hub grease 21 O D 3707121 2 50 55 PASS
PASS exc P G control lever repair 3731061 1 2 45 48 52 TON 53 Ml TON exc D D CONTROL ASSY shaft and housing 3686801 1 6 20 49 54 PASS CONTROL ASSY shaft ...
SPD 1st Ser exc D D 55 COMM 3 SPD 2nd Ser 6 cyl CONTROL ASSY shaft and housing 3700376 1 5 15 55 COMM 3 SPD 8 cyl 56 57 COMM 3 SPD CONTROL ...
95 55 56 PASS w P G after trans Serial No C 103 56 57 PASS CORV w P G for complete repair see NOTE 8 3716678 T 1 3 10 7 55 57 PASS TON
COMM lst Ser exc IS GROMMET release rod I D x O D 3696521 1 9 775 55 57 D D 4 SPD 2nd Ser CLIP pawl rod anti rattle ...
PASS one dia hole 3652752 1 40 49 50 PASS 53 57 CORV 3687878 2 20 51 57 PASS 558903 2 20 55 57 COMM 1 TON 2nd Ser exc 4 SPD one dia hole ...
2nd Ser exc 4 SPD anti rattle O D 4 coil foot oper 3687152 1 10 48 51 1 TON UTILITY exc D D COE lever cone type 2 coils 1 I D hand
SPD SEAL oil stamped 591353 591353 1 1 55 48 57 ALL 4 SPD 55 LQ TON 3 SJPD hvy duty lst Ser 55 57 COMM 3 SPD hvy duty 2 nd Ser SEAL ...
TON 3 SPD 54 55 EQ 1 TON 3 SPD hvy duty lst Ser SEAL support oil stmp d 3845021 3845021 1 1 45 54 57 ALL w H T exc 1 g TON SEAL ...
TON lst Ser exc FR ratio 15 17 w 15 6 and 8 ply tires 1580273 1 16 80 55 Ei TON w hvy duty 4 SPD 2nd Ser ratio
95 55 57 K Ser 3F 2nd Ser 3 dia tube F 56 3725032 1 27 50 55 57 1 TON 2 SPD 2nd Ser 55 2 TON hvy duty 2 SPD 2nd Ser ...
SPD 2nd Ser F 54 3718927 1 26 40 56 Ser 6D hvy duty 2 SPD 57 Ser 6D F 3737109 1 31 50 56 Ser 6E hvy duty 2 SPD 57 Ser ...
TON SBC 2nd Ser rear 13 long 3723152 1 1 30 55 57 2 TON SBC 2nd Ser rear 15 long 3723153 1 1 40 55 57 2 TON SBC 2nd Ser inter 11 long
TON 2 SPD 2nd Ser 9 00 x 20 10 00 x 20 8 72 and None 3689178 6 40 55 56 2 TON hvy duty 2nd Ser 8 25 x 20 56 57 TON ...
Ser 53 55 ll g TON lst Ser 7 50 20 8 25 20 37 6 None 3689179 55 57 ll Q TON 2nd Ser exc 2 SPD 55 2 TON hvy duty 2nd Ser ...
TON 2 SPD 8 x 22 5 9 x 22 5 8 72 and None 3689179 6 40 54 55 TON lst Ser 6 00 x 16 6 ply 55 57 LQ TON 2nd Ser
TON 3 SPD lst Ser exc SUB 53 55 1 TON HVY DUTY lst Ser 54 55 COMM lst Ser exc FFC black ribbed rubber 3716701 1 8 60 50 51 ia M TON ...
under pass seat molded 3810590 3810590 1 2 65 54 55 COMM CAB lst Ser exc 4 SPD blue molded 3712345 3712345 1 8 60 54 55 COMM CAB lst Ser exc 4 SPD green ...
Ser exc 4 SPD brown molded 3712347 3712347 1 8 60 54 55 COMM CAB 4 SPD lst Ser blue molded 3712339 3712339 1 8 60 54 55 COMM CAB 4 SPD lst Ser green
SPD exc D D SBC 2 TON w top cover 40 270278 1 5 95 48 53 TON 3 SPD exc D D w top cover 40 5660013 1 5 95 53 PASS ...
TON lst Ser exc D D SBC 54 55 COMM w deluxe equip lst Ser exc H T hvy duty w top cover 391 O L 5665293 1 5 95 55 PASS ...
PASS exc P G 31 O L drittwood grey 3726435 1 4 30 57 PASS exc A T 31 O L 3741359 1 4 30 57 PASS
TON lst Ser 55 57 1 TON sgl wheel 2nd Ser exc Prop Brake 7 O L 3697394 2 45 51 57 PASS CORV TON STRUT ...
TON lst Ser 55 57 TON sgl wheel 2nd Ser exc Prop Brake 1 O L w out eccentric 3697393 2 11 51 52 PASS TON 53 57 PASS COMM sgl wheel exc Prop Brake ...
Parking Brake Camshaft Hole 36 39 PASS COMM 40 57 PASS TON 53 57 CORV frt and rear 36 53 1 TON UTILITY front 54 57 1 TON UTILITY frt cmd rear flg adj hole
TON lst Ser 8 leaves 3708462 2 26 20 55 Q TON hvy duty lst Ser 10 leaves 3708464 2 33 75 55 57 EQ TON 2nd Ser exc hvy duty 7 leaves 2 stage ...
2nd Ser exc PICK UP 56 57 Ser 3E w hvy duty 10 leaves pink paint 3714532 2 31 90 55 57 D D 2nd Ser 55 57 1 TON hvy duty 2nd Ser ...
TON 2nd Ser exc SBC 10 leaves 3715392 2 45 90 55 57 1 TON SBC 2nd Ser 12 leaves 3718082 2 49 85 55 57 UTILITY 2nd Ser exc SBC 5 leaves auxiliary spring
SPD exc FK Fl 55 57 COMM 3 SPD COVER housing strg shift 3686798 1 95 55 CORV 3 SPD 8 cyl COVER lever control 3724065 1 27 50 53 55 CORV ...
SPD exc FK FI 55 57 COMM 3 SPD CLAMP housing strg shilt 3687429 1 35 48 54 ALL 3 SPD exc FK Fl 55 57 COMM 3 SPD PLUG housing strg shift ...
SPD 40 47 COMM 3 SPD center shift 590864 1 07 4 025 PlN SPRING Geurshift Lever Pivot 40 54 ALL exc 4 SPD 55 57 COMM exc 4 SPD 56 57 1 TON
seal and washer kit 5682694 1 1 05 55 57 PASS P S adapter kit 56 83349 1 2 95 55 57 PASS P S adapter and sleeve ...
PASS w mast jacket X cast on hsg 5664306 1 37 80 53 54 PASS exc P S w mast jacket 5666322 1 37 80 53 PASS ...
PASS P S 5680756 1 180 90 54 55 Ton ust Ser 54 55 1 TON w H T hvy duty lst Ser 54 55 1 1 TON 4 SPD lst Ser