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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 (SGD) 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: $0.911 15,081In Stock 8,374On Order New Product	Mfr. Part No. 34565-0005 Mouser Part No 538-34565-0005 New Product	Molex	Automotive Connectors MX123 WIRE DRESS COVER 66/73/80 CKT	Datasheet	15,081In Stock 8,374On Order On Order Ship Dates Mfr. No: 34565-0005 Stock: 15,081 Can Dispatch Immediately On Order: 1,400 Pending 4,400 Expected 9/11/2026 2,574 Expected 11/11/2026 Factory Lead Time: 10 Weeks	$0.911 $0.793 $0.725 $0.654 View $0.596 $0.494 $0.428 $0.392 $0.378	Min.: 1 Mult.: 1
Automotive Connectors MX123 HRN CONN ASSY 66 CKT OPT9 KEY C/66 Molex 216741-0004 216741-0004 Molex 1: $7.92 124In Stock New Product	Mfr. Part No. 216741-0004 Mouser Part No 538-216741-0004 New Product	Molex	Automotive Connectors MX123 HRN CONN ASSY 66 CKT OPT9 KEY C/66 Learn More about Molex mx123 sealed connectors	Datasheet	124In Stock	$7.92 $7.19 $6.83 $6.66 View $6.35 $5.54 $4.83 $4.69 $4.52	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 56 Pos. Shrouded Assy., Qty(56) 0.64mm Square Sig Pins, Harness Side Key Code H, Gray (Au Mate Side Finish) 31386-2002 Molex 1: $17.27 2,724In Stock	Mfr. Part No. 31386-2002 Mouser Part No 538-31386-2002	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 56 Pos. Shrouded Assy., Qty(56) 0.64mm Square Sig Pins, Harness Side Key Code H, Gray (Au Mate Side Finish) Learn More about Molex mx123 sealed connectors	Datasheet	2,724In Stock	$17.27 $12.53 $12.21 $11.90 View $11.67 $9.90	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., (72) 0.64mm Square Sig Pins + (1) 2.8mm Pwr Blade, Harness Side Key Code A, Black (Au Mate Side Finish) 31387-2014 Molex 1: $30.23 1,089In Stock	Mfr. Part No. 31387-2014 Mouser Part No 538-31387-2014	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., (72) 0.64mm Square Sig Pins + (1) 2.8mm Pwr Blade, Harness Side Key Code A, Black (Au Mate Side Finish) Learn More about Molex transportation solutions	Datasheet	1,089In Stock	$30.23 $27.54 $27.13 $25.87 View $24.64 $22.06 $21.05 Quote	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 66 Pos. Shrouded Assy., Qty(64) 0.64mm Square Sig Pins + Qty(2) 2.8mm Pwr Blades, Harness Side Key Code C, Blue (Ag Mate Side Finish) 31387-8006 Molex 1: $8.94 1,062In Stock	Mfr. Part No. 31387-8006 Mouser Part No 538-31387-8006	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 66 Pos. Shrouded Assy., Qty(64) 0.64mm Square Sig Pins + Qty(2) 2.8mm Pwr Blades, Harness Side Key Code C, Blue (Ag Mate Side Finish) Learn More about Molex mx123 sealed connectors	Datasheet	1,062In Stock	$8.94 $8.31 $7.85 $6.41 View $6.36 $6.32 $6.13 $5.83	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 80 Pos. Shrouded Assy., Qty(80) 0.64mm Square Sig Pins, Harness Side Key Code H, Gray (Ag Mate Side Finish) 31387-4018 Molex 1: $9.83 968In Stock	Mfr. Part No. 31387-4018 Mouser Part No 538-31387-4018	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 80 Pos. Shrouded Assy., Qty(80) 0.64mm Square Sig Pins, Harness Side Key Code H, Gray (Ag Mate Side Finish) Learn More about Molex mx123 sealed connectors	Datasheet	968In Stock	$9.83 $7.32 $6.98 $6.85 View $6.66 $6.38 $6.30	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 66 Pos. Shrouded Assy., Qty(64) 0.64mm Square Sig Pins + Qty(2) 2.8mm Pwr Blades, Harness Side Key Code A, Black (Au Mate Side Finish) 31387-8001 Molex 1: $19.77 815In Stock	Mfr. Part No. 31387-8001 Mouser Part No 538-31387-8001	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 66 Pos. Shrouded Assy., Qty(64) 0.64mm Square Sig Pins + Qty(2) 2.8mm Pwr Blades, Harness Side Key Code A, Black (Au Mate Side Finish) Learn More about Molex mx123 sealed connectors	Datasheet	815In Stock	$19.77 $18.18 $17.94 $17.68 View $17.24 $14.67 $13.03	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 80 Pos. Shrouded Assy., (80) 0.64mm Square Sig Pins, Harness Side Key Code H, Gray (Au Mate Side Finish) 31387-4009 Molex 1: $18.58 942In Stock	Mfr. Part No. 31387-4009 Mouser Part No 538-31387-4009	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 80 Pos. Shrouded Assy., (80) 0.64mm Square Sig Pins, Harness Side Key Code H, Gray (Au Mate Side Finish) Learn More about Molex transportation solutions	Datasheet	942In Stock	$18.58 $15.69 $15.59 $15.48 View $15.33 $13.75 $13.56 Quote	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., (72) 0.64mm Square Sig Pins + (1) 2.8mm Pwr Blade, Harness Side Key Code B, Gray (Au Mate Side Finish) 31387-2002 Molex 1: $23.90 909In Stock	Mfr. Part No. 31387-2002 Mouser Part No 538-31387-2002	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., (72) 0.64mm Square Sig Pins + (1) 2.8mm Pwr Blade, Harness Side Key Code B, Gray (Au Mate Side Finish) Learn More about Molex transportation solutions	Datasheet	909In Stock	$23.90 $22.52 $20.51 $19.88 Quote Quote	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 80 Pos. Shrouded Assy., (80) 0.64mm Square Sig Pins, Harness Side Key Code G, Blue (Au Mate Side Finish) 31387-4001 Molex 1: $22.52 741In Stock	Mfr. Part No. 31387-4001 Mouser Part No 538-31387-4001	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 80 Pos. Shrouded Assy., (80) 0.64mm Square Sig Pins, Harness Side Key Code G, Blue (Au Mate Side Finish) Learn More about Molex transportation solutions	Datasheet	741In Stock	$22.52 $19.86 $19.64 $19.49 View $17.75 $14.66 $14.18 $13.48	Min.: 1 Mult.: 1
Automotive Connectors MX64 F TERM 22 AWG B WIND REEL OF 1000 33468-0001 (Mouser Reel) Molex 1,000: $0.095 15,000In Stock	Mfr. Part No. 33468-0001 (Mouser Reel) Mouser Part No 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 $0.095 $0.092	Min.: 1,000 Mult.: 1,000 : 1,000
Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., (72) 0.64mm Square Sig Pins + (1) 2.8mm Pwr Blade, Harness Side Key Code C, Blue (Au Mate Side Finish) 31387-2003 Molex 1: $22.60 80In Stock	Mfr. Part No. 31387-2003 Mouser Part No 538-31387-2003	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., (72) 0.64mm Square Sig Pins + (1) 2.8mm Pwr Blade, Harness Side Key Code C, Blue (Au Mate Side Finish) Learn More about Molex transportation solutions	Datasheet	80In Stock	$22.60 $21.26 $20.62 $20.07 View $19.91 $19.22 $18.31	Min.: 1 Mult.: 1
Automotive Connectors MX123 0.64mm Grommet Seal Plug 34586-0001 Molex 1: $0.163 501,837In Stock	Mfr. Part No. 34586-0001 Mouser Part No 538-34586-0001	Molex	Automotive Connectors MX123 0.64mm Grommet Seal Plug Learn More about Molex mx64 sealed connectors	Datasheet	501,837In Stock	$0.163 $0.136 $0.121 $0.116 View $0.103 $0.098 $0.092	Min.: 1 Mult.: 1
Crimpers / Crimping Tools PremiumGrade Hand Crimp Tool for 2.54mm MX64 Terminals, 22-18 AWG 63811-4200 Molex 1: $1,036.90 33In Stock	Mfr. Part No. 63811-4200 Mouser Part No 538-63811-4200	Molex	Crimpers / Crimping Tools PremiumGrade Hand Crimp Tool for 2.54mm MX64 Terminals, 22-18 AWG Learn More about Molex mx64 sealed connectors	Datasheet	33In Stock	$1,036.90 $986.75 $974.22 Quote Quote	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 56 Pos. Shrouded Assy., (56) 0.64mm Square Sig Pins, Harness Side Key Code G, Blue (Au Mate Side Finish) 31386-2001 Molex 1: $17.67 1,877In Stock	Mfr. Part No. 31386-2001 Mouser Part No 538-31386-2001	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 56 Pos. Shrouded Assy., (56) 0.64mm Square Sig Pins, Harness Side Key Code G, Blue (Au Mate Side Finish) Learn More about Molex transportation solutions	Datasheet	1,877In Stock	$17.67 $15.76 $15.42 $14.81 View $14.28 $12.84 $12.82 $12.34 Quote	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., Qty(72) 0.64mm Square Sig Pins + Qty(1) 2.8mm Pwr Blade, Harness Side Key Code A, Black (Ag Mate Side Finish) 31387-2034 Molex 1: $11.22 610In Stock	Mfr. Part No. 31387-2034 Mouser Part No 538-31387-2034	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., Qty(72) 0.64mm Square Sig Pins + Qty(1) 2.8mm Pwr Blade, Harness Side Key Code A, Black (Ag Mate Side Finish) Learn More about Molex mx123 sealed connectors	Datasheet	610In Stock	$11.22 $11.17 $10.95 $9.02 View $8.53 $7.07 Quote	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit. MX64 Terminal, Gold (Au) Pltg, 22 AWG, Left Reel Payoff, Also used w/ MX123 Female Recept. Housing 33467-0004 Molex 10,000: $0.133 20,000In Stock	Mfr. Part No. 33467-0004 Mouser Part No 538-33467-0004	Molex	Automotive Connectors 2.54mm Pit. MX64 Terminal, Gold (Au) Pltg, 22 AWG, Left Reel Payoff, Also used w/ MX123 Female Recept. Housing Learn More about Molex mx64 sealed connectors	Datasheet	20,000In Stock	Reel $0.133	Min.: 10,000 Mult.: 10,000 : 10,000
Automotive Connectors 2.54mm Pit. MX64 Terminal, Gold (Au) Pltg, 20-18 AWG, Right Reel Payoff, Also used w/ MX123 Female Recept. Housing 33467-0005 Molex 9,000: $0.128 36,000In Stock 216,000Expected 31/12/2026	Mfr. Part No. 33467-0005 Mouser Part No 538-33467-0005	Molex	Automotive Connectors 2.54mm Pit. MX64 Terminal, Gold (Au) Pltg, 20-18 AWG, Right Reel Payoff, Also used w/ MX123 Female Recept. Housing Learn More about Molex mx64 sealed connectors	Datasheet	36,000In Stock 216,000Expected 31/12/2026	Reel $0.128	Min.: 9,000 Mult.: 9,000 : 9,000
Automotive Connectors MX150 Mat-Sealed Male Conn. Assy., Dual Row, 12 Pos., Keying Option C, w/out Conn. Pos. Assurance, Dark Gray 33482-6261 Molex 1: $4.79 994In Stock	Mfr. Part No. 33482-6261 Mouser Part No 538-33482-6261	Molex	Automotive Connectors MX150 Mat-Sealed Male Conn. Assy., Dual Row, 12 Pos., Keying Option C, w/out Conn. Pos. Assurance, Dark Gray Learn More about Molex _mx150	Datasheet	994In Stock	$4.79 $4.08 $3.64 $3.47 View $3.25 $2.99 $2.86 $2.64 $2.58	Min.: 1 Mult.: 1
Automotive Connectors MX123 73/80 Circuit Dress Cover 34565-0003 Molex 1: $2.56 4,609In Stock 5,200Expected 16/11/2026	Mfr. Part No. 34565-0003 Mouser Part No 538-34565-0003	Molex	Automotive Connectors MX123 73/80 Circuit Dress Cover Learn More about Molex transportation solutions	Datasheet	4,609In Stock 5,200Expected 16/11/2026	$2.56 $2.27 $2.11 $1.77 View $1.66 $1.59 $1.47 $1.43	Min.: 1 Mult.: 1
Extraction, Removal & Insertion Tools Extraction Tool for SPOX, MX64, Ditto, MX150CE, Milli-Grid Terminals 63813-1400 Molex 1: $117.18 102In Stock	Mfr. Part No. 63813-1400 Mouser Part No 538-63813-1400	Molex	Extraction, Removal & Insertion Tools Extraction Tool for SPOX, MX64, Ditto, MX150CE, Milli-Grid Terminals Learn More about Molex mx123 sealed connectors	Datasheet	102In Stock	$117.18 $110.08 $106.54 $101.63 View $101.58 $101.50 Quote	Min.: 1 Mult.: 1
Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., Qty(72) 0.64mm Square Sig Pins + Qty(1) 2.8mm Pwr Blade, Harness Side Key Code B, Gray (Ag Mate Side Finish) 31387-2032 Molex 1: $9.55 487In Stock	Mfr. Part No. 31387-2032 Mouser Part No 538-31387-2032	Molex	Automotive Connectors 2.54mm Pit., MX123 Header, 73 Pos. Shrouded Assy., Qty(72) 0.64mm Square Sig Pins + Qty(1) 2.8mm Pwr Blade, Harness Side Key Code B, Gray (Ag Mate Side Finish) Learn More about Molex mx123 sealed connectors	Datasheet	487In Stock	$9.55 $9.37 $9.36 $9.34 View $9.33 $8.98 $7.48 $5.89 $5.86	Min.: 1 Mult.: 1
Automotive Connectors MX64 F TERM 18-20AWG B WIND Loose PC 33467-0005 (Loose Piece) Molex 1: $0.34 26,748In Stock	Mfr. Part No. 33467-0005 (Loose Piece) Mouser Part No 538-33467-0005-LP	Molex	Automotive Connectors MX64 F TERM 18-20AWG B WIND Loose PC Learn More about Molex mx64 sealed connectors	Datasheet	26,748In Stock	$0.34 $0.292 $0.258 $0.242	Min.: 1 Mult.: 1
Automotive Connectors MX123 49/56 Circuit Dress Cover 34575-0003 Molex 1: $0.762 6,230In Stock	Mfr. Part No. 34575-0003 Mouser Part No 538-34575-0003	Molex	Automotive Connectors MX123 49/56 Circuit Dress Cover Learn More about Molex transportation solutions	Datasheet	6,230In Stock	$0.762 $0.649 $0.543 $0.51 View $0.49 $0.465 $0.411 $0.386 $0.373	Min.: 1 Mult.: 1
Crimpers / Crimping Tools Hand Tool for MX64 ISO Terminal 63825-8400 Molex 1: $809.09 13In Stock	Mfr. Part No. 63825-8400 Mouser Part No 538-63825-8400	Molex	Crimpers / Crimping Tools Hand Tool for MX64 ISO Terminal Learn More about Molex sealed connector solution	Datasheet	13In Stock	$809.09 $750.00 $725.93	Min.: 1 Mult.: 1

MX123 Sealed Connectors

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MX123 Sealed Connectors

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