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Engine Timing Chain

Part Number: 12646386
Supersession(s): 12586482; 12646387
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CHAIN ASSEMBLY - Timing. Engine Timing Chain.
Engine Timing Chain.

Timing Chain - Repair or Replace
Your engine's timing chain can stretch over time resulting in a check engine light that comes along with excessive noise from your engine's timing cover. If the chain has broken, which is a rare occurrence, the engine will not start. If your Pontiac has high mileage along with any of these other symptoms, contact our service department for expert diagnosis.

CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS.
Full Diagram
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your Pontiac
#20
Oil pan. Oil pump. All Models; 5.7L; All; Auto Trans. All Models; 5.7L; All; Manual Trans. All Models; 5.7L; Auto Trans. All Models; 5.7L; Exhaust. All Models; 5.7L; Intake. All Models; 5.7L; Left. All Models; 5.7L; Manual Trans. All Models; 5.7L; No. 1. All Models; 5.7L; No. 2. All Models; 5.7L; No. 5. All Models; 5.7L; No.1. All Models; 5.7L; No.2. All Models; 5.7L; No.3. All Models; 5.7L; No.4. All Models; 5.7L; Right. All Models; 5.7L; Standard. Hi-Limit.
All Models; 5.7L.
CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS.
Full Diagram
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your Pontiac
#20
OIL PAN. OIL PUMP. All. Grand Prix; Bonded Seal. Grand Prix; Exhaust. Grand Prix; Intake. Grand Prix; Left. Grand Prix; No. 1. Grand Prix; No. 2. Grand Prix; No. 3. Grand Prix; Reverse Lip Seal. Grand Prix; Right.
Grand Prix.
CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS.
Full Diagram
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your Pontiac
#20
OIL PAN. OIL PUMP. GTO; Exhaust. GTO; Intake. GTO; Left. GTO; No. 1. GTO; No. 2. GTO; No. 3. GTO; Right.
GTO.
CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS.
Full Diagram
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your Pontiac
#20
OIL PAN. OIL PUMP. GTO; Exhaust. GTO; Intake. GTO; Left. GTO; No. 1. GTO; No. 2. GTO; No. 3. GTO; Right.
GTO.
CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS.
Full Diagram
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your Pontiac
#20
Oil pan. Oil pump. G8; 6. 0L; 0. 05 O/S. G8; 6. 0L; 0. 5MM O/S. G8; 6.0L; 1st Design. G8; 6.0L; 2nd Design. G8; 6. 0L; No. 1. G8; 6. 0L; No. 2. G8; 6. 0L; No. 3. G8; 6.0L; Standard. G8; 6.0L; w/Cyl. Deactivation. G8; 6.0L; w/o Cyl. Deactivation. G8; 6. 2L; No. 2. G8; 6. 2L; No. 3. G8; Auto Trans. G8; Exhaust. G8; Intake. G8; Left; 1st Design. G8; Left; 2nd Design. G8; No. 1. G8; No. 3. G8; Right; 1st Design. G8; Right; 2nd Design.
G8.

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