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Engines, Transmissions & Parts

Discover our extensive inventory of 885 tested, high-quality used OEM Infiniti parts. Every component is rigorously inspected with exact mileage-based pricing, 90-day warranty, and nationwide shipping.

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90 Days
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55 parts for Infiniti Q45 Engine — page 1 of 2

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1990 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

1990 Infiniti Q45 Engine

SKU P-158

engine

1990 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

$1,740$1,450–$1,885 by mileage
1990 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering (op...

1990 Infiniti Q45 Engine

SKU P-159

engine

1990 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering (op...

$1,740$1,450–$1,885 by mileage
1991 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

1991 Infiniti Q45 Engine

SKU P-160

engine

1991 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

$3,588$2,990–$3,887 by mileage
1991 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1991 Infiniti Q45 Engine

SKU P-161

engine

1991 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$2,748$2,290–$2,977 by mileage
1991 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1991 Infiniti Q45 Engine

SKU P-162

engine

1991 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$2,748$2,290–$2,977 by mileage
1991 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1991 Infiniti Q45 Engine

SKU P-163

engine

1991 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$799$599–$999 by mileage
1992 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

1992 Infiniti Q45 Engine

SKU P-164

engine

1992 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

$3,588$2,990–$3,887 by mileage
1992 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1992 Infiniti Q45 Engine

SKU P-165

engine

1992 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$2,748$2,290–$2,977 by mileage
1992 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1992 Infiniti Q45 Engine

SKU P-166

engine

1992 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$2,748$2,290–$2,977 by mileage
1992 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1992 Infiniti Q45 Engine

SKU P-167

engine

1992 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$799$599–$999 by mileage
1993 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

1993 Infiniti Q45 Engine

SKU P-168

engine

1993 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

$3,588$2,990–$3,887 by mileage
1993 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1993 Infiniti Q45 Engine

SKU P-169

engine

1993 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$2,748$2,290–$2,977 by mileage
1993 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1993 Infiniti Q45 Engine

SKU P-170

engine

1993 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$2,748$2,290–$2,977 by mileage
1993 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1993 Infiniti Q45 Engine

SKU P-171

engine

1993 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$799$599–$999 by mileage
1994 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

1994 Infiniti Q45 Engine

SKU P-172

engine

1994 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), all wheel steering (opt ...

$3,588$2,990–$3,887 by mileage
1994 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1994 Infiniti Q45 Engine

SKU P-173

engine

1994 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$2,748$2,290–$2,977 by mileage
1994 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1994 Infiniti Q45 Engine

SKU P-174

engine

1994 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$2,748$2,290–$2,977 by mileage
1994 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

1994 Infiniti Q45 Engine

SKU P-175

engine

1994 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), front wheel steering, Q4...

$799$599–$999 by mileage
1995 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), Q45 (without full active...

1995 Infiniti Q45 Engine

SKU P-176

engine

1995 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), Q45 (without full active...

$1,572$1,310–$1,703 by mileage
1995 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), Q45 (without full active...

1995 Infiniti Q45 Engine

SKU P-177

engine

1995 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), Q45 (without full active...

$1,572$1,310–$1,703 by mileage
1995 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), Q45a (Full Active Suspen...

1995 Infiniti Q45 Engine

SKU P-178

engine

1995 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), Q45a (Full Active Suspen...

$1,488$1,240–$1,612 by mileage
1996 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), traction control

1996 Infiniti Q45 Engine

SKU P-179

engine

1996 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), traction control

$2,748$2,290–$2,977 by mileage
1996 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), w/o traction control

1996 Infiniti Q45 Engine

SKU P-180

engine

1996 Infiniti Q45 Engine - (4.5L, VIN N, 4th digit), w/o traction control

$1,572$1,310–$1,703 by mileage
1997 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit)

1997 Infiniti Q45 Engine

SKU P-181

engine

1997 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit)

$1,488$1,240–$1,612 by mileage
1998 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit)

1998 Infiniti Q45 Engine

SKU P-182

engine

1998 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit)

$1,488$1,240–$1,612 by mileage
1999 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit)

1999 Infiniti Q45 Engine

SKU P-183

engine

1999 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit)

$1,488$1,240–$1,612 by mileage
2000 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit), from 11/99

2000 Infiniti Q45 Engine

SKU P-184

engine

2000 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit), from 11/99

$1,656$1,380–$1,794 by mileage
2000 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit), thru 10/99

2000 Infiniti Q45 Engine

SKU P-185

engine

2000 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit), thru 10/99

$1,572$1,310–$1,703 by mileage
2001 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit)

2001 Infiniti Q45 Engine

SKU P-186

engine

2001 Infiniti Q45 Engine - (4.1L, VIN B, 4th digit)

$1,656$1,380–$1,794 by mileage
2002 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

2002 Infiniti Q45 Engine

SKU P-187

engine

2002 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

$1,656$1,380–$1,794 by mileage
2003 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

2003 Infiniti Q45 Engine

SKU P-188

engine

2003 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

$1,656$1,380–$1,794 by mileage
2004 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

2004 Infiniti Q45 Engine

SKU P-189

engine

2004 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

$1,656$1,380–$1,794 by mileage
2005 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

2005 Infiniti Q45 Engine

SKU P-190

engine

2005 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

$1,656$1,380–$1,794 by mileage
2006 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

2006 Infiniti Q45 Engine

SKU P-191

engine

2006 Infiniti Q45 Engine - (4.5L, VIN B, 4th digit)

$1,656$1,380–$1,794 by mileage
1990 Infiniti Q45 Transmission - AT

1990 Infiniti Q45 Transmission

SKU P-638

transmission

1990 Infiniti Q45 Transmission - AT

$799$599–$999 by mileage
1991 Infiniti Q45 Transmission - AT, from 4/91

1991 Infiniti Q45 Transmission

SKU P-639

transmission

1991 Infiniti Q45 Transmission - AT, from 4/91

$799$599–$999 by mileage
1991 Infiniti Q45 Transmission - AT, thru 3/91

1991 Infiniti Q45 Transmission

SKU P-640

transmission

1991 Infiniti Q45 Transmission - AT, thru 3/91

$799$599–$999 by mileage
1992 Infiniti Q45 Transmission - AT, from 2/92

1992 Infiniti Q45 Transmission

SKU P-641

transmission

1992 Infiniti Q45 Transmission - AT, from 2/92

$799$599–$999 by mileage
1992 Infiniti Q45 Transmission - AT, thru 1/92

1992 Infiniti Q45 Transmission

SKU P-642

transmission

1992 Infiniti Q45 Transmission - AT, thru 1/92

$799$599–$999 by mileage
1993 Infiniti Q45 Transmission - AT

1993 Infiniti Q45 Transmission

SKU P-643

transmission

1993 Infiniti Q45 Transmission - AT

$799$599–$999 by mileage
1994 Infiniti Q45 Transmission - AT

1994 Infiniti Q45 Transmission

SKU P-644

transmission

1994 Infiniti Q45 Transmission - AT

$799$599–$999 by mileage
1995 Infiniti Q45 Transmission - AT

1995 Infiniti Q45 Transmission

SKU P-645

transmission

1995 Infiniti Q45 Transmission - AT

$799$599–$999 by mileage
1996 Infiniti Q45 Transmission - AT

1996 Infiniti Q45 Transmission

SKU P-646

transmission

1996 Infiniti Q45 Transmission - AT

$1,656$1,380–$1,794 by mileage
1997 Infiniti Q45 Transmission - AT

1997 Infiniti Q45 Transmission

SKU P-647

transmission

1997 Infiniti Q45 Transmission - AT

$1,236$1,030–$1,339 by mileage
1998 Infiniti Q45 Transmission - AT

1998 Infiniti Q45 Transmission

SKU P-648

transmission

1998 Infiniti Q45 Transmission - AT

$1,236$1,030–$1,339 by mileage
1999 Infiniti Q45 Transmission - AT

1999 Infiniti Q45 Transmission

SKU P-649

transmission

1999 Infiniti Q45 Transmission - AT

$1,236$1,030–$1,339 by mileage
2000 Infiniti Q45 Transmission - AT

2000 Infiniti Q45 Transmission

SKU P-650

transmission

2000 Infiniti Q45 Transmission - AT

$1,236$1,030–$1,339 by mileage
2001 Infiniti Q45 Transmission - AT

2001 Infiniti Q45 Transmission

SKU P-651

transmission

2001 Infiniti Q45 Transmission - AT

$1,236$1,030–$1,339 by mileage

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