Engine Timing Chain

Part Number: 12637743
Supersession(s): 12599716; 12616608; 12633452; 12683547

Chain. Timing.
2nd Design. Engine Timing Chain. Idler to Cam. Assembly - CM/SHF INTER Drive. Guide. Engine. Secondary.

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 2020 Buick Regal Sportback has high mileage along with any of these other symptoms, contact our service department for expert diagnosis.

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Diagram ENGINE / TRANSAXLE. ENGINE PARTS. for your 2020 Buick Regal Sportback
#6
lower. non key type. primary. secondary. short. upper.
Left.secondary. Right.secondary.
Diagram ENGINE / TRANSAXLE. ENGINE PARTS. for your 2020 Buick Regal Sportback
#6
primary. secondary.
Left.secondary. Right.secondary.
Diagram ENGINE / TRANSAXLE. ENGINE PARTS. for your 2020 Buick Regal Sportback
#6
long. primary. secondary. short.
Left.secondary. Right.secondary.
Diagram ENGINE / TRANSAXLE. ENGINE PARTS. for your 2020 Buick Regal Sportback
#5
1ST design. 2ND design. 3. 6 liter. Lower. Primary. Secondary. Upper.
Left.3.6 LITER. Right.3.6 LITER.
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your 2020 Buick Regal Sportback
#18
OIL COOLER. OIL PAN. OIL PUMP. VARIABLE VALVE TIMING. CAMSHAFT OIL SEALS; XTS. XTS; AWD. XTS; Exhaust; Left; w/o Turbocharger. XTS; Exhaust; Left; w/Turbocharger. XTS; Exhaust; Right; w/o Turbocharger. XTS; Exhaust; Right; w/Turbocharger. XTS; Front; AWD. XTS; Front; FWD. XTS; Full Set. XTS; FWD. XTS; Intake; Left; w/o Turbocharger. XTS; Intake; Left; w/Turbocharger. XTS; Intake; Right; w/o Turbocharger. XTS; Intake; Right; w/Turbocharger. XTS; Left; w/o Turbocharger. XTS; Left; w/Turbocharger. XTS; Primary Chain; Lower. XTS; Primary Chain; Upper. XTS; Rear; Left; AWD. XTS; Rear; Left; FWD. XTS; Rear; Right; AWD. XTS; Rear; Right; FWD.
XTS; Secondary.
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your 2020 Buick Regal Sportback
#18
Oil pan. Oil pump. Variable valve timing. 2 & 4. CTS; 1st Design. CTS; 2nd Design. CTS; Exhaust; Left. CTS; Exhaust; Right. CTS; Intake; Left. CTS; Intake; Right. CTS; Left. Cts; No. 1. Cts; No. 3. CTS; Primary Chain. CTS; Right. CTS; Secondary Chain; Slack Side; Left. CTS; Secondary Chain; Slack Side; Right. CTS; Secondary Chain; Tensioner Side; Left. CTS; Secondary Chain; Tensioner Side; Right. CTS; Secondary; Left. CTS; Secondary; Right.
CTS; Secondary.
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your 2020 Buick Regal Sportback
#18
OIL PAN. OIL PUMP. VARIABLE VALVE TIMING. #2. #4. CTS; #1. CTS; #3. CTS; Exhaust; Left. CTS; Exhaust; Right. CTS; Intake; Left. CTS; Intake; Right. CTS; Left. CTS; Primary Chain. CTS; Right. CTS; Secondary Chain; Slack Side; Left. CTS; Secondary Chain; Slack Side; Right. CTS; Secondary Chain; Tensioner Side; Left. CTS; Secondary Chain; Tensioner Side; Right. CTS; Secondary; Left. CTS; Secondary; Right.
CTS; Secondary.
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your 2020 Buick Regal Sportback
#18
OIL PAN. OIL PUMP. VARIABLE VALVE TIMING. ATS; All. ATS; California. ATS; Exhaust; Left. ATS; Exhaust; Right. ATS; Federal. ATS; Intake; Left. ATS; Intake; Right. ATS; Kit. ATS; Left; All. ATS; Left; California. ATS; Left; Federal. ATS; Left; w/o SIDI Engine. ATS; Left; w/SIDI Engine. ATS; Lower. ATS; Main Bearing. ATS; Primary Chain; Lower. ATS; Primary Chain; Upper. ATS; Primary; Left. ATS; Primary; Right. ATS; Right; All. ATS; Right; California. ATS; Right; Federal. ATS; Secondary Chain; Slack Side; Left.
ATS; Secondary.
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your 2020 Buick Regal Sportback
#20
OIL PAN. OIL PUMP. VARIABLE VALVE TIMING. Impala; .25MM OS. Impala; All; w/CNG. Impala; All; w/o CNG. Impala; California. Impala; Exhaust; Left. Impala; Exhaust; Right. Impala; Federal. Impala; Front. Impala; Intake; Left. Impala; Intake; Right. Impala; Left; All; w/CNG. Impala; Left; All; w/o CNG. Impala; Left; California. Impala; Left; Federal. Impala; Main Bearing; Stamped 1. Impala; Primary Chain; w/CNG. Impala; Primary Chain; w/o CNG. Impala; Rear. Impala; Right; All; w/CNG. Impala; Right; All; w/o CNG. Impala; Right; California. Impala; Right; Federal. Impala; Secondary Chain; w/CNG; Slack Side.
Impala; Secondary Chain; w/CNG; Tension Side.
Diagram CAMSHAFT & TIMING. CRANKSHAFT & BEARINGS. CYLINDER HEAD & VALVES. LUBRICATION. MOUNTS. PISTONS. RINGS & BEARINGS. for your 2020 Buick Regal Sportback
#18
OIL PAN. OIL PUMP. VARIABLE VALVE TIMING. Impala; .25MM OS. Impala; All; w/CNG. Impala; All; w/o CNG. Impala; California. Impala; Exhaust; Left. Impala; Exhaust; Right. Impala; Federal. Impala; Front. Impala; Intake; Left. Impala; Intake; Right. Impala; Left; All; w/CNG. Impala; Left; All; w/o CNG. Impala; Left; California. Impala; Left; Federal. Impala; Main Bearing; Stamped 1. Impala; Primary Chain; w/CNG. Impala; Primary Chain; w/o CNG. Impala; Rear. Impala; Right; All; w/CNG. Impala; Right; All; w/o CNG. Impala; Right; California. Impala; Right; Federal. Impala; Secondary Chain; w/CNG; Slack Side.
Impala; Secondary.

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