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MX123 Sealed Connectors

Molex MX123 Sealed Connection System is a fully sealed, high-performance system, designed for transportation power-train applications that require reliable connections in high-vibration under-the-hood environments. The MX123 sealed connection system from Molex meets GMW3191 specifications, ensuring this product can perform in very harsh, hot, high-vibration environments. This system utilizes matte-seal technology, creating an extremely resilient sealed connector system with a small package. Features include multiple polarization, wire-dress and PCB-tail options, and integrated TPA and CPA components, assisting in keeping the interface mated while freeing up valuable time in the assembly process.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.
Automotive Connectors MX123 WIRE DRESS COVER 66/73/80 CKT 34565-0005 Molex 1: S/ 2.61 10,205In Stock 13,200On Order New Product	Mfr. Part # 34565-0005 Mouser Part # 538-34565-0005 New Product	Molex	Automotive Connectors MX123 WIRE DRESS COVER 66/73/80 CKT	Datasheet	10,205In Stock 13,200On Order On Order Ship Dates Mfr. #: 34565-0005 Stock: 10,205 Can Ship Immediately On Order: 3,800 Pending 9,400 Expected 11/2/2026 Factory Lead-Time: 9 Weeks	S/ 2.61 S/ 2.27 S/ 2.07 S/ 1.87 View S/ 1.70 S/ 1.41 S/ 1.23 S/ 1.12 S/ 1.08	Min.: 1 Mult.: 1
Automotive Connectors MX123 56CKT HDR SHRD KEY H GRY GLD 31386-2002 Molex 1: S/ 48.03 2,724In Stock	Mfr. Part # 31386-2002 Mouser Part # 538-31386-2002	Molex	Automotive Connectors MX123 56CKT HDR SHRD KEY H GRY GLD Learn More about Molex mx123 sealed connectors	Datasheet	2,724In Stock	S/ 48.03 S/ 41.30 S/ 40.87 S/ 40.44 View S/ 38.22 S/ 32.46 S/ 30.60 S/ 27.68 Quote	Min.: 1 Mult.: 1
Automotive Connectors MX123 HDR 73CKT SHRD KEY A BLK GLD 31387-2014 Molex 1: S/ 86.53 1,089In Stock	Mfr. Part # 31387-2014 Mouser Part # 538-31387-2014	Molex	Automotive Connectors MX123 HDR 73CKT SHRD KEY A BLK GLD Learn More about Molex transportation solutions	Datasheet	1,089In Stock	S/ 86.53 S/ 78.01 S/ 76.29 S/ 74.04 View S/ 72.75 S/ 63.25 S/ 60.26 Quote	Min.: 1 Mult.: 1
Automotive Connectors MX123 HDR 80CKT SHRD KEY H GRY SLVR 31387-4018 Molex 1: S/ 28.14 968In Stock	Mfr. Part # 31387-4018 Mouser Part # 538-31387-4018	Molex	Automotive Connectors MX123 HDR 80CKT SHRD KEY H GRY SLVR Learn More about Molex mx123 sealed connectors	Datasheet	968In Stock	S/ 28.14 S/ 18.76 S/ 18.41 S/ 18.06 S/ 18.02	Min.: 1 Mult.: 1
Automotive Connectors MX123 66CKT HDR SHRD KEY C BLUE SLVR 31387-8006 Molex 1: S/ 25.73 1,072In Stock	Mfr. Part # 31387-8006 Mouser Part # 538-31387-8006	Molex	Automotive Connectors MX123 66CKT HDR SHRD KEY C BLUE SLVR Learn More about Molex mx123 sealed connectors	Datasheet	1,072In Stock	S/ 25.73 S/ 23.78 S/ 22.46 S/ 19.03 View S/ 18.76 S/ 18.22 S/ 17.56 S/ 16.70	Min.: 1 Mult.: 1
Automotive Connectors MX123 HDR 80CKT SHRD KEY H GRY GLD 31387-4009 Molex 1: S/ 54.73 942In Stock	Mfr. Part # 31387-4009 Mouser Part # 538-31387-4009	Molex	Automotive Connectors MX123 HDR 80CKT SHRD KEY H GRY GLD Learn More about Molex transportation solutions	Datasheet	942In Stock	S/ 54.73 S/ 45.89 S/ 45.35 S/ 45.00 View S/ 44.10 S/ 39.82 S/ 38.81 Quote	Min.: 1 Mult.: 1
Automotive Connectors MX123 HDR 80CKT SHRD KEY H BLUE GLD 31387-4001 Molex 1: S/ 65.90 1,071In Stock	Mfr. Part # 31387-4001 Mouser Part # 538-31387-4001	Molex	Automotive Connectors MX123 HDR 80CKT SHRD KEY H BLUE GLD Learn More about Molex transportation solutions	Datasheet	1,071In Stock	S/ 65.90 S/ 53.17 S/ 52.63 S/ 52.35 View S/ 48.93 S/ 43.17	Min.: 1 Mult.: 1
Automotive Connectors MX123 66CKT HDR SHRD Key A BLK GLD 31387-8001 Molex 1: S/ 56.60 817In Stock	Mfr. Part # 31387-8001 Mouser Part # 538-31387-8001	Molex	Automotive Connectors MX123 66CKT HDR SHRD Key A BLK GLD Learn More about Molex mx123 sealed connectors	Datasheet	817In Stock	S/ 56.60 S/ 52.74 S/ 51.96 S/ 50.95 View S/ 49.36 S/ 42.00 S/ 37.29	Min.: 1 Mult.: 1
Automotive Connectors MX123 HDR 73CKT SHRD KEY B GRY GLD 31387-2002 Molex 1: S/ 70.45 909In Stock	Mfr. Part # 31387-2002 Mouser Part # 538-31387-2002	Molex	Automotive Connectors MX123 HDR 73CKT SHRD KEY B GRY GLD Learn More about Molex transportation solutions	Datasheet	909In Stock	S/ 70.45 S/ 65.78 S/ 65.67 S/ 65.20 View S/ 58.70 S/ 57.26 Quote	Min.: 1 Mult.: 1
Automotive Connectors MX64 F TERM 22 AWG B WIND REEL OF 1000 33468-0001 (Mouser Reel) Molex 1,000: S/ 0.272 15,000In Stock	Mfr. Part # 33468-0001 (Mouser Reel) Mouser Part # 538-33468-0001-MR	Molex	Automotive Connectors MX64 F TERM 22 AWG B WIND REEL OF 1000 Learn More about Molex mx64 sealed connectors	Datasheet	15,000In Stock	Reel S/ 0.272 S/ 0.265	Min.: 1,000 Mult.: 1,000 : 1,000
Automotive Connectors MX123 HDR 73CKT SHRD KEY C BLUE GLD 31387-2003 Molex 1: S/ 64.69 80In Stock	Mfr. Part # 31387-2003 Mouser Part # 538-31387-2003	Molex	Automotive Connectors MX123 HDR 73CKT SHRD KEY C BLUE GLD Learn More about Molex transportation solutions	Datasheet	80In Stock	S/ 64.69 S/ 60.84 S/ 59.01 S/ 57.45 View S/ 56.99 S/ 55.00 S/ 52.39	Min.: 1 Mult.: 1
Automotive Connectors MX123 0.64mm Grommet Seal Plug 34586-0001 Molex 1: S/ 0.467 516,761In Stock	Mfr. Part # 34586-0001 Mouser Part # 538-34586-0001	Molex	Automotive Connectors MX123 0.64mm Grommet Seal Plug Learn More about Molex mx64 sealed connectors	Datasheet	516,761In Stock	S/ 0.467 S/ 0.389 S/ 0.346 S/ 0.331 View S/ 0.296 S/ 0.28 S/ 0.265	Min.: 1 Mult.: 1
Crimpers / Crimping Tools MX64 FEMALE CRIMPER 63811-4200 Molex 1: S/ 2,961.10 35In Stock	Mfr. Part # 63811-4200 Mouser Part # 538-63811-4200	Molex	Crimpers / Crimping Tools MX64 FEMALE CRIMPER Learn More about Molex mx64 sealed connectors	Datasheet	35In Stock	S/ 2,961.10 S/ 2,824.20 S/ 2,733.59 View Quote	Min.: 1 Mult.: 1
Automotive Connectors MX123 56KCT HDR SHRD KEY G BLUE GOLD 31386-2001 Molex 1: S/ 49.94 1,877In Stock	Mfr. Part # 31386-2001 Mouser Part # 538-31386-2001	Molex	Automotive Connectors MX123 56KCT HDR SHRD KEY G BLUE GOLD Learn More about Molex transportation solutions	Datasheet	1,877In Stock	S/ 49.94 S/ 44.61 S/ 43.95 S/ 43.32 View S/ 41.73 S/ 37.52 S/ 36.82 S/ 35.30 Quote	Min.: 1 Mult.: 1
Automotive Connectors MX123 HDR 73CKT SHRD KEY A BLK SLVR 31387-2034 Molex 1: S/ 32.11 610In Stock	Mfr. Part # 31387-2034 Mouser Part # 538-31387-2034	Molex	Automotive Connectors MX123 HDR 73CKT SHRD KEY A BLK SLVR Learn More about Molex mx123 sealed connectors	Datasheet	610In Stock	S/ 32.11 S/ 31.96 S/ 31.33 S/ 25.81 View S/ 24.41 S/ 20.24 Quote	Min.: 1 Mult.: 1
Automotive Connectors MX64 F TERM 22 AWG D WIND REEL 10000 33467-0004 Molex 10,000: S/ 0.381 20,000In Stock	Mfr. Part # 33467-0004 Mouser Part # 538-33467-0004	Molex	Automotive Connectors MX64 F TERM 22 AWG D WIND REEL 10000 Learn More about Molex mx64 sealed connectors	Datasheet	20,000In Stock	Reel S/ 0.381	Min.: 10,000 Mult.: 10,000 : 10,000
Automotive Connectors MX64 F TERM 18-20AWG B WIND REEL 9000 33467-0005 Molex 9,000: S/ 0.366 36,000In Stock 216,000Expected 12/31/2026	Mfr. Part # 33467-0005 Mouser Part # 538-33467-0005	Molex	Automotive Connectors MX64 F TERM 18-20AWG B WIND REEL 9000 Learn More about Molex mx64 sealed connectors	Datasheet	36,000In Stock 216,000Expected 12/31/2026	Reel S/ 0.366	Min.: 9,000 Mult.: 9,000 : 9,000
Automotive Connectors MX64 RCPT Au 18/20 Reel of 9000 33467-0006 Molex 9,000: S/ 0.381 81,000In Stock 162,000Expected 11/12/2026	Mfr. Part # 33467-0006 Mouser Part # 538-33467-0006	Molex	Automotive Connectors MX64 RCPT Au 18/20 Reel of 9000 Learn More about Molex mx64 sealed connectors	Datasheet	81,000In Stock 162,000Expected 11/12/2026	Reel S/ 0.381	Min.: 9,000 Mult.: 9,000 : 9,000
Automotive Connectors MX150 SLD MALE DR 12CKT POL C W/O CPA 33482-6261 Molex 1: S/ 13.70 994In Stock	Mfr. Part # 33482-6261 Mouser Part # 538-33482-6261	Molex	Automotive Connectors MX150 SLD MALE DR 12CKT POL C W/O CPA Learn More about Molex _mx150	Datasheet	994In Stock	S/ 13.70 S/ 11.68 S/ 10.43 S/ 9.93 View S/ 9.19 S/ 8.56 S/ 8.17 S/ 7.55 S/ 7.40	Min.: 1 Mult.: 1
Automotive Connectors MX123 73/80Ckt Dress Cover 34565-0003 Molex 1: S/ 7.32 4,652In Stock 5,200Expected 11/20/2026	Mfr. Part # 34565-0003 Mouser Part # 538-34565-0003	Molex	Automotive Connectors MX123 73/80Ckt Dress Cover Learn More about Molex transportation solutions	Datasheet	4,652In Stock 5,200Expected 11/20/2026	S/ 7.32 S/ 6.50 S/ 5.64 S/ 5.06 View S/ 4.75 S/ 4.55 S/ 4.32 S/ 4.20 S/ 4.09	Min.: 1 Mult.: 1
Extraction, Removal & Insertion Tools EXTRACTOR TOOL 63813-1400 Molex 1: S/ 334.25 103In Stock	Mfr. Part # 63813-1400 Mouser Part # 538-63813-1400	Molex	Extraction, Removal & Insertion Tools EXTRACTOR TOOL Learn More about Molex mx123 sealed connectors	Datasheet	103In Stock	S/ 334.25 S/ 309.84 S/ 298.01 S/ 285.32 View S/ 285.20 S/ 283.96	Min.: 1 Mult.: 1
Automotive Connectors MX123 HDR 73CKT SHRD KEY B GRY SLVR 31387-2032 Molex 1: S/ 26.86 487In Stock	Mfr. Part # 31387-2032 Mouser Part # 538-31387-2032	Molex	Automotive Connectors MX123 HDR 73CKT SHRD KEY B GRY SLVR Learn More about Molex mx123 sealed connectors	Datasheet	487In Stock	S/ 26.86 S/ 26.82 S/ 26.78 S/ 26.74 View S/ 26.70 S/ 25.69 S/ 18.22 S/ 16.85 S/ 15.88	Min.: 1 Mult.: 1
Automotive Connectors MX64 F TERM 18-20AWG B WIND Loose PC 33467-0005 (Loose Piece) Molex 1: S/ 0.973 27,380In Stock	Mfr. Part # 33467-0005 (Loose Piece) Mouser Part # 538-33467-0005-LP	Molex	Automotive Connectors MX64 F TERM 18-20AWG B WIND Loose PC Learn More about Molex mx64 sealed connectors	Datasheet	27,380In Stock	S/ 0.973 S/ 0.837 S/ 0.74 S/ 0.693	Min.: 1 Mult.: 1
Automotive Connectors MX123 49/56Ckt Dress Cover 34575-0003 Molex 1: S/ 2.18 6,336In Stock	Mfr. Part # 34575-0003 Mouser Part # 538-34575-0003	Molex	Automotive Connectors MX123 49/56Ckt Dress Cover Learn More about Molex transportation solutions	Datasheet	6,336In Stock	S/ 2.18 S/ 1.86 S/ 1.55 S/ 1.46 View S/ 1.40 S/ 1.33 S/ 1.25 S/ 1.20 S/ 1.17	Min.: 1 Mult.: 1
Crimpers / Crimping Tools Hand Crimp Tool MX64 .35mm2&.50-.75mm2 Wr 63825-8400 Molex 1: S/ 2,315.73 16In Stock	Mfr. Part # 63825-8400 Mouser Part # 538-63825-8400	Molex	Crimpers / Crimping Tools Hand Crimp Tool MX64 .35mm2&.50-.75mm2 Wr Learn More about Molex sealed connector solution	Datasheet	16In Stock	S/ 2,315.73 S/ 2,146.60 S/ 2,077.70	Min.: 1 Mult.: 1

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