Exhaust System fit your 1999 Pontiac Montana

My Vehicle Change Vehicle

1999 Pontiac Montana

6 Cyl 3.4L MFI, HO

My Vehicle Change Vehicle

1999 Pontiac Montana

6 Cyl 3.4L MFI, HO

Categories Close X

You have selected

Fuel System, Exhaust, Emission System

Other Categories

Body Moldings, Sheet Metal, Rear Compartment Hardware, Roof Hardware

Body Mounting, Air Conditioning, Audio/Entertainment

Body Wiring, Roof Trim

Brakes

Brakes, Rear Axle, Propeller Shaft, Wheels, Tires

Cooling System, Grille, Oil System

Engine

Frames, Springs, Shocks, Bumpers

Front End Sheet Metal, Heater

Front Suspension, Steering

Interior Trim, Front Seat Trim, Seat Belts

Maintenance Parts, Fluids, Capacities, Electrical Connectors

Rear Glass, Seat Parts, Adjuster

Rear Seat Trim, Carpet

Starter, Generator, Ignition, Electrical, Lamps

Transmission - Automatic

Windshield, Wiper, Mirrors, Instrument Panel, Console, Doors

Parts Questions

Sort by:

Recommended

Part No. & Part Description

Price

Part No. &
Part Description

11517996
NUT, Exhaust Pipe, NUT,EXHAUST MANIFOLD PIPE(M10X1.5X11)(21.5 OUTSIDE DIAMETER)(8.917)
- Require Quantity:
  02
- Package Quantity:
  1
MSRP: $7.19
$4.57
1
Add To Cart

24505057
GASKET, Exhaust Pipe, GASKET,EXHAUST MANIFOLD PIPE(SEAL CATALYTIC CONVERTER (O-RING TYPE.))
MSRP: $18.28
$11.62
1
Add To Cart

SENSOR, Computer Control Sensors
19178924
SENSOR, OXYGEN(POSITION 3)(POST CONVERTER)
Fitting Vehicle Options:
U(LA1)
MSRP: $135.22
$65.12
1
Add To Cart
19178958
SENSOR, HEATED OXYGEN
- Fitting Vehicle Options:
  U
MSRP: $122.36
$58.92
1
Add To Cart
19178958
SENSOR, OXYGEN(POSITION 1)(IN EXHAUST MANIFOLD/CROSSOVER)
- Fitting Vehicle Options:
  U(LA1)
MSRP: $122.36
$58.92
1
Add To Cart

STUD, Exhaust Pipe
10182334
STUD, EXHAUST CROSSOVER PIPE(M8X1.25)
Require Quantity:
06
Package Quantity:
5
MSRP: $17.22
$11.57
5
Add To Cart
24576687
STUD, EXHAUST MANIFOLD PIPE(M10X1.5X24 TO M10X1.5X33)
- Require Quantity:
  02
- Package Quantity:
  10
MSRP: $22.17
$14.11
10
Add To Cart

10328740
GASKET, Catalytic Converter, GASKET,CATALYTIC CONVERTER(REAR, LARGER GASKET)
MSRP: $32.16
$21.51
1
Add To Cart

11589154
STUD, Intake & Exhaust Manifold, STUD,EXHAUST MANIFOLD(8.981)
- Require Quantity:
  12
- Package Quantity:
  5
MSRP: $8.20
$5.49
5
Add To Cart

MANIFOLD, Engine Exhaust Manifold
10182321
MANIFOLD, EXHAUST
Location:
Driver Side
MSRP: $303.50
$118.14
1
Add To Cart
24506309
MANIFOLD, EXHAUST
- Location:
  Passenger Side

24504632
GASKET, Manifold to Cylinder Head, GASKET,EXHAUST MANIFOLD
- Require Quantity:
  02
- Package Quantity:
  1

10244211
HANGER, Catalytic Converter, HANGER,CATALYTIC CONVERTER(INCLUDES 9)
MSRP: --
$33.66
1
Add To Cart

CONVERTER, Catalytic Converter
10420355
CONVERTER, 3WAY CATALYTIC (W/EXHAUST PIPE)
Fitting Vehicle Options:
U(LA1,NM8)(EXPORT)
MSRP: $512.48
$140.29
1
Add To Cart
24508548
CONVERTER, 3WAY CATALYTIC(W/EXHAUST MANIFOLD PIPE)
- Fitting Vehicle Options:
  U(LA1,NB7)(EXC NM8)

24507946
PIPE, Exhaust Pipe, PIPE,EXHAUST CROSSOVER
MSRP: $138.79
$102.54
1
Add To Cart

10235354
SHIELD, Catalytic Converter, SHIELD,CATALYTIC CONVERTER HEAT

10235757
HANGER, Exhaust Tail Pipe, HANGER,EXHAUST TAIL PIPE(INCLUDES 19)

10236641
SHIELD, Exhaust Pipe, SHIELD,EXHAUST CROSSOVER PIPE HEAT(UPPER)

10316002
HANGER, Exhaust Muffler/Resonator, HANGER,EXHAUST MUFFLER(INCLUDES 15)

MUFFLER, Exhaust
10425103
MUFFLER, EXHAUST(W/EXHAUST PIPE & TAIL PIPE)(INCLUDES HANGERS)
Fitting Vehicle Options:
UN(LA1)
10425104
MUFFLER, EXHAUST(W/EXHAUST PIPE & TAIL PIPE)
- Fitting Vehicle Options:
  UM(LA1)

10448573
INSULATOR, Exhaust Tail Pipe, INSULATOR,EXHAUST TAIL PIPE HANGER(PART OF 18)

10448573
INSULATOR, Catalytic Converter, INSULATOR,CATALYTIC CONVERTER HANGER(PART OF 8)
- Require Quantity:
  02
- Package Quantity:
  1

SHIELD, Exhaust Manifold
12568407
SHIELD, EXHAUST MANIFOLD HEAT
Location:
Driver Side
24506294
SHIELD, EXHAUST MANIFOLD UPPER HEAT
- Location:
  Passenger Side
24506295
SHIELD, EXHAUST MANIFOLD LOWER HEAT
- Location:
  Passenger Side

15262493
SHIELD, Exhaust Tail Pipe, SHIELD,EXHAUST MUFFLER HEAT

24508549
CONVERTER, Exhaust Pipe, CONVERTER,3WAY CATALYTIC(W/EXHAUST MANIFOLD PIPE)

11570082
BOLT, HEX FLANGED HEAD,M8X1.25X22,19 THREAD,18 OUTSIDE DIAMETER,10.9,GMW3359
- Fitting Vehicle Options:
  , U
- Require Quantity:
  04
- Package Quantity:
  10
MSRP: $7.79
$4.95
10
Add To Cart

11517996
NUT, HEX FLANGED HEAD,M10X1.5,11.2 THICK,21.5 OUTSIDE DIAMETER,10,7111M,ALL METAL PREVENT TORQUE(CATALYTIC CONVERTER)
- Fitting Vehicle Options:
  , U
- Require Quantity:
  02
- Package Quantity:
  1
MSRP: $7.19
$4.57
1
Add To Cart

11517996
NUT, HEX FLANGED HEAD,M10X1.5,11.2 THICK,21.5 OUTSIDE DIAMETER,10,7111M,ALL METAL PREVENT TORQUE(EXHAUST MANIFOLD PIPE)
- Require Quantity:
  02
- Package Quantity:
  1
MSRP: $7.19
$4.57
1
Add To Cart

11609746
NUT, HEX FLANGED HEAD,M8X1.25,8.9THK,17.6 O.D.,10 STEEL,GMW3200, PREVENT TORQUE(EXHAUST MANIFOLD)
- Fitting Vehicle Options:
  , U
- Require Quantity:
  12
- Package Quantity:
  12
MSRP: $4.30
$2.73
12
Add To Cart

11609746
NUT, HEX FLANGED HEAD,M8X1.25,8.9THK,17.6 O.D.,10 STEEL,GMW3200, PREVENT TORQUE(EXHAUST CROSSOVER PIPE)
- Fitting Vehicle Options:
  , U
- Require Quantity:
  06
- Package Quantity:
  12
MSRP: $4.30
$2.73
12
Add To Cart

11515764
BOLT, HEX FLANGED HEAD,M10X1.5X20,18THD,22.3 O.D.,10.9,7114M
- Fitting Vehicle Options:
  , U
- Require Quantity:
  02
- Package Quantity:
  1
MSRP: $23.00
$14.62
1
Add To Cart

11519840
BOLT, HEX FLANGED HEAD,M6X1X12.3,6.3 THREAD,14.2 OUTSIDE DIAMETER,10.9,GMW3359,MACHINE,MAT-POINT(EXHAUST CROSSOVER PIPE HEAT SHIELD)
MSRP: $6.91
$4.38
5
Add To Cart

9442468
RIVET, POP,3/16X.375 SHANK,.562 OUTSIDE DIAMETER DOME,SELF PLUG,ALUMINUM,PLAIN,.047-.078 GROUP
- Fitting Vehicle Options:
  , U
- Require Quantity:
  08
- Package Quantity:
  1
MSRP: $4.03
$2.56
1
Add To Cart

Genuine GM Parts, the Right Choice

GMPartsGiant.com offers the wholesale prices for genuine 1999 Pontiac Montana parts. Parts like Exhaust System are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.4L. Model Code: 2/SLIDING DOORS, EXT, EXT 2/SLIDING DOORS, MONTANA.