bitzer S4N-8.2, Reciprocating compressor, Semihermetic, 4 Cylinders

Use this catalogue to identify the spare parts you need to repair your compressor. The OEM catalogue is crossreferenced with our spare parts database, matched items are highlighted. Some of our existing spare parts may not be shown because our database is incomplete (e.g. missing OEM P/N), or because we sell the items separatelly (typical example is the piston-connecting rod assembly). If you have any doubt please ask us.

All OEM manufacturer's names, part numbers, diagrams, products description and information are provided for reference and identification purposes only, and it is not implied that any part listed is the product of the OEM manufacturer.

Item num.	Ralco P/N	OEM P/N	Description (from OEM manufacturer)
2	BRG2100	31110007	Bearing bush / Slide bearing; dimensions: Ø55 × Ø50 × 30 (Radial); used in: Motor side.
3	BRG2100	31110014	Bearing bush / Slide bearing; dimensions: Ø55 × Ø50 × 30 (Radial); used in: Crankcase side; from year: 11/1990.
4	WAS2100	32050005	Thrust washer; dimensions: Ø62 × Ø50,5 × 1,7; used in: Motor side.
5	WAS2100	32050005	Thrust washer; dimensions: Ø62 × Ø50,5 × 1,7; used in: Crankcase side.
6	CKS2100	30100702	Crankshaft.
7	PLU23040	36611201	Plug; dimensions: M8×1 (DIN 906).
23	GKT2036	37231403	Gasket; dimensions: Ø182 × Ø133 × 1.
24	HSG2100	30512501	Bearing cover; used in: complete; from year: 02/1996.
25	BRG2110	31110017	Bearing bush / Slide bearing; dimensions: Ø50 × Ø45 × 40,7 (Radial).
26	WAS2000	32050007	Thrust washer; dimensions: Ø62 × Ø48 × 1,7.
27	BLTCMA10X030	38030632	Cheese-head screw; dimensions: M10 × 30 (DIN 912 - M10 × 30 - 10.9); from year: 02/1996.
27		38030625	Cheese-head screw; dimensions: M10 × 50 (DIN 912 - M10 × 50 - 10.9); from year: 02/1996.
27	BLTCMA10X025	38015605	Hexagon head screw; dimensions: M10 × 25 (DIN 933 - M10 × 25 - 10.9); from year: 01/1996.
28	PMP2100	36250301	Oil pump; used in: complete.
29	RNG2019	37200119	O-ring (CR).
30		38015505	Hexagon head screw; dimensions: M8 × 20 (DIN 933 - M8 × 20 - 10.9).
31		38033901	Cheese-head screw; dimensions: M10 × 30 (ISO 4762 - M10 × 30 - 10.9); from year: 12/2018.
32		32031401	Fixing plate; dimensions: 140 × 40 × 3.
33	LCKCMG04	38200201	Washer; dimensions: A4,3 (brass DIN 125).
34		00000001	Article cancelled.
35	BLTCMA4X008T	38050751	Oval head screw; dimensions: M4 × 8 (ISO 7045 - M4 × 8 - 4.8).
36		34732033	Differential oil pressure cut-out; dimensions: 100 × 50 × 130 (115/230 V - 1 - 50/60 Hz); used in: complete; from year: 07/2001.
37		36150021	Schrader valve; dimensions: 1/8" - 27 NPTF × 7/16" - 20 UNF.
38	WAS2102	31203002	Thrust collar; dimensions: Ø65 × 7.
39	RNG2116	37200116	O-ring (CR).
40	WAS2103	31200501	Retaining ring; dimensions: Ø64 × 45 × 4,2.
41	SPG2002	32590002	Spring washer; dimensions: Ø58,5 × Ø46 × 0,5.
42	WAS2104	31200602	Thrust collar; dimensions: Ø58 × Ø42 × 8,6.
43		00000011	is not required for this type !.
45		38400112	Parallel key; dimensions: 12 × 8 × 45 (DIN 6885 - A).
48		00000001	Article cancelled.
49		32050204	Thrust washer; dimensions: Ø54 × Ø17 × 5 (steel).
50	SPGCMW16	38215004	Thrust washer; dimensions: S16 (spring steel).
51		38016612	Hexagon head screw; dimensions: M16 × 50 (ISO 4017 - M16 × 50 - 10.9).
52	GKT2011	37231502	Gasket; dimensions: Ø286 × Ø238 × 1.
53		30520601	Housing cover.
54	BLTMYA052	38005702	Hexagon head screw; dimensions: M12 × 55 (DIN 931 - M12 × 55 - 10.9).
70		36612402	Sealing screw; dimensions: M22; from year: 11/2018.
71		00000001	Article cancelled; from year: 11/2018.
72	SPG2108	32500001	Pressure spring.
73	SRO2100	36200302	Oil filter; dimensions: Ø14 × 105.
74	VSG2150	36011008	Oil return system; from year: 09/1998.
75		36611002	Plug; dimensions: 1/4" (steel).
76	RNG2012	37200315	O-ring (CR).
77	GLS2000	36180202	Sight glass; dimensions: Ø67 × 8,5.
79	BLTCMA6X020	38015406	Hexagon head screw; dimensions: M6 × 20 (DIN 933 - M6 × 20 - 10.9).
80		36611010	Plug; dimensions: 1/2" - 14 NPTF (steel).
81	GKT2113	37241301	Gasket; dimensions: 220 × 200 × 1.
82		32030703	Bottom plate; dimensions: 220 × 200 × 12 × Ø21.
83	BLTCMA10X025	38015605	Hexagon head screw; dimensions: M10 × 25 (DIN 933 - M10 × 25 - 10.9).
84		37000302	Kit damper elements; dimensions: Lo=42 (spring); from year: 07/1988.
84		37000201	Kit damper elements (Shore hardness 50 // elastomer).
85		32500205	Pressure spring; dimensions: 42; from year: 07/1988.
85		37502602	Damper element (Shore hardness 55 // elastomer); from year: 07/1981.
86		37000303	Kit damper elements; dimensions: Lo=46 (spring).
86		37000201	Kit damper elements (Shore hardness 50 // elastomer).
87		32500206	Pressure spring; dimensions: 46; from year: 07/1988.
87		37502603	Damper element (Shore hardness 66 // elastomer); from year: 07/1981.
88		32730902	Foot; dimensions: 315 × 40 × 8 × Ø21.
89	BLTCMA10X025	38015605	Hexagon head screw; dimensions: M10 × 25 (DIN 933 - M10 × 25 - 10.9).
90	VSG2006	36111001	Gas equalising valve; dimensions: G1/2".
91		00000001	Article cancelled.
104	BLTCMA10X065	38005604	Hexagon head screw; dimensions: M10 × 65 (DIN 931 - M10 × 65 - 10.9).
105	PLU75022	36611001	Plug; dimensions: 1/8“ - 27 NPTF (steel).
105	PLU2E200	36610021	Plug; dimensions: 1/8" - 27 NPTF.
111	TER2000	34341602	Terminal plate; dimensions: 165 × 120 × 15,5; used in: complete; from year: 06/2012.
112	GKT2039	37242115	Gasket; dimensions: 163 × 118 × 1; from year: 09/2021.
113		00000007	Article no longer available.
114		34341708	Electrical connecting parts; used in: complete.
115	GKT21401	37212401	Gasket; dimensions: 165 × 120 × 3; used in: violet.
116		34341403	Terminal plate; used in: complete.
117		37500202	Isolating plate; dimensions: 70 × 20 × 6.
118		37500102	Pressure bush; dimensions: Ø6 × Ø21,5 × 8.
119		37500002	Gasket ring; dimensions: Ø12 × Ø6 × 8.
120	WAS70033	38200203	Washer; dimensions: A6,4 (brass DIN 125).
121	NUT42300	38130104	Hexagon nut; dimensions: M6 (ISO 4032 - M6 - Ms).
122		32031803	Connection bridge; dimensions: 39 × 12 × 0,8 (brass).
123		38200202	Washer; dimensions: A5,3 (brass DIN 125).
124		38130103	Hexagon nut; dimensions: M5 (ISO 4032 - M5 - Ms).
125	SPGCMW8	38215201	Thrust washer; dimensions: S8; from year: 01/2008.
127		30291502	Terminal; used in: separate out using filters; from year: 03/2005.
128		34341404	Terminals complete; used in: complete.
129		00000007	Article no longer available.
130		37500201	Isolating plate; dimensions: 53 × 18 × 6,5.
131		37500101	Pressure bush; dimensions: Ø4,5 × Ø18,5 × 8,5.
132		37500001	Gasket ring; dimensions: Ø4,5 × Ø18,5 × 8,5.
133		00000001	Article cancelled.
134		00000001	Article cancelled.
135		00000001	Article cancelled.
136		37500601	Isolating plate; dimensions: 86 × 70 × 3.
137	TER2003	34341301	Kit connection bridge; used in: violet.
138		38030622	Cheese-head screw; dimensions: M10 × 20 (DIN 912 - M10 × 20 - 10.9).
139	PLC201	32120201	Centring plate; dimensions: 167 × 122 × 12.
140	GKT2090	37212001	Gasket; dimensions: 133 × 117 × 2.
141	BOX2002	34350767	Terminal box; dimensions: 244 × 189 × 85 (aluminum).
142	LCKCMG04	38200201	Washer; dimensions: A4,3 (brass DIN 125).
143	BLT23851	38050851	Oval head screw; dimensions: M5 × 20 (DIN 7985 - M5 × 20 - 4.8); used in: Aluminium terminal box; from year: 12/1993.
144		00000003	Not available separately.
145		34702804	Compressor protection device (24 V - 50/60 Hz).
145		34702805	Compressor protection device (24 V - DC).
145	SEN1011	34700401	Compressor protection device (230 V - 50/60 Hz).
145		34700402	Compressor protection device (115 V - 50/60 Hz).
145	SEN1010	34700403	Compressor protection device (230 V - 50/60 Hz).
145		34700405	Compressor protection device (115 V - 50/60 Hz).
145	SEN2101	34703504	Compressor protection device (110/230 V - 50/60Hz); from year: 06/2021.
145	SEN2101	34703504	Compressor protection device (110/230 V - 50/60Hz); from year: 06/2021.
146	BLTCMA4X008T	38050752	Oval head screw; dimensions: M4 × 10 (DIN 7985 - M4 × 10 - 4.8); from year: 12/2010.
147	BLT23154	38050154	Oval head screw; dimensions: M6 × 16 (DIN 7985 - M6 × 16 - 4.8); from year: 12/1993.
150	GKT21401	37212401	Gasket; dimensions: 165 × 120 × 3.
154		34626046	Built-in motor; dimensions: Ø223 (40P 7,5 HP); from year: 06/2012.
154		34626014	Built-in motor; dimensions: Ø223 (40D 7,5 HP); from year: 06/2012.
154		34626012	Built-in motor; dimensions: Ø223 (40S 7,5 HP); from year: 06/2012.
156	KEY2E110	38410105	Gib-headed key; dimensions: 5 × 5 × 36 (steel DIN 6887 - 5 × 5 × 36).
157	SPRCM10X12	38035801	Set screw; dimensions: M10 × 12 (DIN 916 - M10 × 12 - 10.9); from year: 04/2001.
190		34320834	Oil heater (230 V - 1 - 50/60 Hz -100 W).
190		34320832	Oil heater (110 V - 1 - 50/60 Hz - 100 W).
190		34320831	Oil heater (24 V - 1 - 50/60 Hz - 100 W).
190		34320830	Oil heater (12 V - 1 - 50/60 Hz - 100 W).
190		34320835	Oil heater (380 V - 1 - 50/60 Hz -100 W).
191		38901902	Electric connector of the device; from year: 10/2024.
192	HTR2110	34590604	Heater sleeve; dimensions: 3/8" - 18 NPTF × 204; from year: 08/2005.
300		30004301	Housing (cast iron).
301	PLT2160	30401702	Valve plate; dimensions: Ø60; used in: complete.
302	GKT2160	37251012	Gasket; dimensions: 127 × 196 × 0,9 - Ø60.
303	GKT2141	37261102	Gasket; dimensions: 127 × 196 × 0,75.
304		30236029	Cylinder head; dimensions: 196 × 127 × 59; from year: 11/2007.
305	PLT2260	30401701	Valve plate; dimensions: Ø55; used in: complete.
306	GKT2155	37251011	Gasket; dimensions: 127 × 196 × 0,9 - Ø55.
307	GKT2142	37261103	Gasket; dimensions: 127 × 196 × 0,75.
308		30236028	Cylinder head; dimensions: 196 × 127 × 59; from year: 11/2007.
309	PLU2E200	36610021	Plug; dimensions: 1/8" - 27 NPTF.
310		36131013	Shut-off valve; dimensions: Ø22 (7/8").
310		36131570	Shut-off valve.
310		36701539	Blind flange (LA48).
311		36600003	Pipe connection; dimensions: Ø22 - 1 1/4" - 12 UNF (steel coppered).
312	GKT2100T	37220003	Gasket ring; dimensions: Ø25,4 × Ø22,2 × 1,5 (1 1/4-12 - PTFE).
313		36620117	Protective cap; dimensions: 3/4" - 16 UNF / L=43 (plastic - GRP).
314	GKT1236	37270701	Gasket; dimensions: 68 × 38 × 1.
315	BLTCMA10X090	38030628	Cheese-head screw; dimensions: M10 × 90 (DIN 912 - M10 × 90 - 10.9).
316		38030623	Cheese-head screw; dimensions: M10 × 25 (DIN 912 - M10 × 25 - 10.9).
317	GKT2031	37270401	Gasket; dimensions: Ø31 × 1,0 (LA66).
318	BLTCMA10X030	38015606	Hexagon head screw; dimensions: M10 × 30 (DIN 933 - M10 × 30 - 10.9).
319		36050750	Piping.
320		37700502	Isolation.
321		36140404	Injection valve (R404A).
321		36140403	Injection valve (R404A).
321		36140402	Injection valve (R404A); from year: 12/1997.
321		36140408	Injection valve (R22); from year: 12/1997.
322		35300207	Subcooler; dimensions: 317 × 76 × 33.
323		36182201	Sight glass; dimensions: Ø10 × 109; from year: 08/1997.
324		34710002	Solenoid valve; dimensions: Ø10 (EVR 6 230 V - 50/60 Hz); used in: Liquid subcooling.
325		36210105	Filter drier; dimensions: DML 053s - Ø10.
326		36040204	Piping.
327	SEN2000	34702303	Sensor (140 °C).
328	PRA2324	30229724	Connecting rod / piston; dimensions: Ø60; used in: complete; from year: 01/2006.
329		30211751	Connecting rod; dimensions: Ø45 × Ø15 × 112.
329	ROD2100	30211750	Connecting rod; dimensions: Ø45 × Ø20 × 112.
330	PST2160	30223216	Piston; dimensions: Ø60; used in: complete.
331	SGM2160	38230052	Piston ring; dimensions: Ø60 × 1,5 (ISO 6622).
332	SGM2161	38231019	Piston ring; dimensions: Ø60 × 1,5 (ISO 6622).
333		38340102	Wrist pin; dimensions: Ø15 × Ø10 × 40 (DIN 73126).
333	PIN2100	38340104	Wrist pin; dimensions: Ø20 × Ø13 × 45 (DIN 73126).
334		30229765	Connecting rod / piston; dimensions: Ø48; used in: complete; from year: 01/2006.
337	SGM2148	38230064	Piston ring; dimensions: Ø48 × 2 (ISO 6622).
338		00000011	is not required for this type !.
339	PST2161	30223331	Piston; dimensions: Ø48; used in: complete.
340	GRF2100	36131014	Shut-off valve; dimensions: Ø28 (1 1/8").
340	GRF2100	36131571	Shut-off valve; dimensions: Ø28.
340		36701539	Blind flange (LA48).
341		36600004	Pipe connection; dimensions: Ø28 - 1 1/4" - 12 UNF (steel coppered).
342	GKT2100T	37220003	Gasket ring; dimensions: Ø25,4 × Ø22,2 × 1,5 (1 1/4-12 - PTFE).
343		36620117	Protective cap; dimensions: 3/4" - 16 UNF / L=43 (plastic - GRP).
344	SRN2102	36200111	Suction gas filter; dimensions: Ø20 × 50.
345	GKT1236	37270701	Gasket; dimensions: 68 × 38 × 1.
350	KIT2163	37281701	Gasket set.
406	COL234330801	34330801	Solenoid coil (230 V - 1 - 50/60 Hz).
407		38900204	Electric connector of the device.

bitzer S4N-8.2, Reciprocating compressor, Semihermetic, 4 Cylinders

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