Mack Parts
Explore our heavy duty truck parts built to keep Mack engines and trucks running strong. Each unit provides reliable performance and long lasting durability for demanding fleets. This range of diesel engine parts supports consistent operation in heavy duty service. Compatible with Mack trucks and engines. Get it now for uninterrupted operation.
Sort by:
Mack 745-276635 Valve Control TW-4 PAI 3706
$171.08 USD
CROSS REFERENCE: 745-280591 745-280592 745-276635 745-276455 APPLICATION: Mack/Multiple Use Application DETAILS: Supply Port (1)1/8in NPT Delivery Ports (2)1/8in NPT BRAND: PAI 3706 Mack 745-276635 Valve Control TW-4 PAI 3706 intended...
Mack 745-28914 Valve Front Axle LQ-4 PAI 36250
$52.65 USD
CROSS REFERENCE: 20QE1275R 20QE3166R 20QE2148 20QE2148R 20QE3129R 745-289144 APPLICATION: Mack/Multiple Use Application DETAILS: (Nominal Hold Off 4 psi) (Nominal Equalizing 60 psi) Supply Port (1)3/8-18 NPT Delivery Port (1)3/8-18 NP...
Mack 7546-110197 Relay Valve RG-2 PAI 802549E
$58.32 USD
CROSS REFERENCE: 7546-110197 APPLICATION: Mack/Multiple Use Application DETAILS: 4 psig Cracking Pressure (2)3/8in-18 NPT Control Ports (1)1/2in-18 NPT Reservoir Port (1)3/8in-18 NPT Delivery Port BRAND: PAI 802549E Mack 7546-110197 Relay...
Mack 7546-110197 Relay Valve RG-2 PAI 802549
$127.97 USD
CROSS REFERENCE: 7546-110197 APPLICATION: Mack/Multiple Use Application DETAILS: 4 psig Cracking Pressure (2)3/8in-18 NPT Control Ports (1)1/2in-18 NPT Reservoir Port (1)3/8in-18 NPT Delivery Port BRAND: PAI 802549 Mack 7546-110197 Relay...
Mack 745-065476 Relay Valve R-12P PAI 52440
$75.84 USD
CROSS REFERENCE: 745-065476 745-109001 745-109002 745-109264 745-109424 745-109446 APPLICATION: Mack/Multiple Use Application DETAILS: Supply Ports (2)1/2-14 NPT Delivery Ports (4)3/8-18 NPT Control Port (1)1/4-18 NPT BRAND: PAI 52440 Mack 745-065476...
Mack 745-065476 Relay Valve R-12P PAI 5244
$226.45 USD
CROSS REFERENCE: 745-065476 745-109001 745-109002 745-109264 745-109424 745-109446 APPLICATION: Mack/Multiple Use Application DETAILS: Supply Ports (2)1/2-14 NPT Delivery Ports (4)3/8-18 NPT Control Port (1)1/4-18 NPT BRAND: PAI 5244 Mack 745-065476...
Mack 745-800481 Relay Valve R-12DC PAI 3401
$254.77 USD
CROSS REFERENCE: 20QE4173 745-800481 APPLICATION: Mack/Multiple Use Application DETAILS: (Opens at 4 psi) Supply Ports (2)1/2in NPT Horizontal Ports (2)1/2in NPT Delivery Ports (2)3/8in NPT Service Ports (2) 1/4in NPT...
Mack 7546-110570 Valve Relay R-8P PAI 802553
$154.77 USD
CROSS REFERENCE: 5866-110570 7546-110570 5396-KN28300 APPLICATION: Mack/Multiple Use Application DETAILS: Control Port (1)3/8in NPT Reservoir Port (1)1/2in NPT Dolly Port (1)3/8in NPT Delivery Port (1)3/8in NPT BRAND: PAI 802553 Mack...
Mack 745-287114 Relay Valve R-8P PAI 5246
$456.01 USD
CROSS REFERENCE: 745-287114 APPLICATION: Mack/Multiple Use Application DETAILS: Supply Ports (2)3/4in P.T. Delivery Ports (2)1/2in P.T. Delivery Port (1)1/4in P.T. BRAND: PAI 5246 Mack 745-287114 Relay Valve R-8P PAI 5246...
Mack 745-289395 R-8 Relay Valve PAI 56170
$95.63 USD
CROSS REFERENCE: 20QE1279 20QE410R 20QE410 745-289395 745-287347 20QE402 20QE402R APPLICATION: Mack/Multiple Use Application DETAILS: Supply Ports (2)1/2-14 NPT Delivery Ports ((2)1/2-14 NPT Service Port (1)1/4-18 NPT BRAND: PAI 56170 Mack...
Mack 745-065146 Relay Valve BP-R1 PAI 56880
$83.34 USD
CROSS REFERENCE: 745-065146 745-106931 APPLICATION: Mack/Multiple Use Application DETAILS: Relay(Bracket included) Delivery Ports (2) 1/2-14 NPT Delivery Ports (2) 3/8-18 NPT Supply Port (2) 1/2-14 NPT Control Port (1) 1/8-27...
Mack 7546-116451P Relay Valve 6 Port PAI 3444
$181.05 USD
CROSS REFERENCE: 7546-116451P 7546-116451 APPLICATION: Mack/Multiple Use Application DETAILS: Delivery Ports (6)3/8in-18 NPT Control Port (1)3/8in-18 NPT Reservoir Port (1)3/4in-14 NPT BRAND: PAI 3444 Mack 7546-116451P Relay Valve 6 Port...