Home / Shop / Flowmaster Force II Exhaust Systems 817666 System, II, Cat-back, Single In/Dual Out, Stainless, Natural, Chevy, GMC, 5.3L, Automatic, Kit

Flowmaster Force II Exhaust Systems 817666 System, II, Cat-back, Single In/Dual Out, Stainless, Natural, Chevy, GMC, 5.3L, Automatic, Kit

SKU: FLO817666

Exhaust Systems

Flowmaster

Flowmaster Force II Exhaust Systems 817666 System, II, Cat-back, Single In/Dual Out, Stainless, Natural, Chevy, GMC, 5.3L, Automatic, Kit

SKU: FLO817666

Exhaust Systems

LAST ONE! Est Ship 4-7 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. The ETA is the approximate time required to prepare your order for dispatch.

We accept

Description

Flowmaster Force II exhaust systems are engineered with the latest technology for improvements in acceleration, passing power, and fuel mileage. The key to these performance enhancements is the use of mandrel-bent tubing. Force II assemblies are available in dozens of muffler and pipe configurations for fitment on thousands of year/make/model cars and trucks. Choose the size and style that's compatible with your engine type.

Part Type

Cat-Back Exhaust Kit 14- GM P/U 1500 5.3L

Data: v4.2 - Upd: 2026-10-17 03:10:42

Specifications

Product Attributes - Brand: Flowmaster
Product Attributes - Manufacturer's Part Number: 817666
Product Attributes - Part Type: Exhaust Systems
Product Attributes - Product Line: Flowmaster Force II Exhaust Systems
Product Attributes - UPC: 700042030026
Product Attributes - System Material: 409 stainless steel
Product Attributes - System Style: Cat-back
Product Attributes - Exhaust Type: Single in/Dual out
Product Attributes - Exit Location: Split rear/Split side
Product Attributes - System Finish: Natural
Product Attributes - Catalytic Converter(s) Included: No
Product Attributes - Intermediate Pipe Diameter (in.): 2.50 in.
Product Attributes - Muffler Included: Yes
Product Attributes - Muffler Quantity: One
Product Attributes - Muffler Configuration: Single inlet/Dual outlet
Product Attributes - Muffler Style: Chambered
Product Attributes - Muffler Material: 409 stainless steel
Product Attributes - Muffler Finish: Black
Product Attributes - Hardware Included: Yes
Product Attributes - Tailpipe Diameter (in.): 2.50 in.
Product Attributes - Tip Included: Yes
Product Attributes - Tip Outlet Size (in.): 3.50
Product Attributes - Tip Quantity: 2
Product Attributes - Tip Shape: Round
Product Attributes - Tip Cut: Straight
Product Attributes - Tip Edge Style: Rolled edge
Product Attributes - Tip Material: 304 stainless steel
Product Attributes - Tip Color: Polished
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold as a kit.
Product Attributes - Special Attention: It is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards.

Reference Information

Brand Name/s	Flowmaster
StreetFX SKU	flo817666
SFX Item ID	4983861
Supplier Item Code	4983861
Manufacturer SKU	817666
Manufacturer UPC	700042030026
Alternative References	FLM817666, 5.3L

Compatibility

Application Data

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2015
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Extended Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.8in, 200.2cm; Crew Cab Pickup; RWD
Engine VIN Code	R
Region	United States (USA)
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2015
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Extended Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.8in, 200.2cm; Crew Cab Pickup; Force II Cat Back System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Engine VIN Code	R
Region	United States (USA)
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2015
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.8in, 200.2cm; Crew Cab Pickup; RWD; Flowmaster Force II Cat-back Exhaust System; Moderate sound
Engine VIN Code	R
Region	United States (USA)
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2015
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.8in, 200.2cm; Crew Cab Pickup; RWD
Engine VIN Code	R
Region	United States (USA)
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2015
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.8in, 200.2cm; Extended Cab Pickup; 4WD; Flowmaster Force II Cat-back Exhaust System; Moderate sound
Engine VIN Code	R
Region	United States (USA)
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2015
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.8in, 200.2cm; Extended Cab Pickup; 4WD
Engine VIN Code	R
Region	United States (USA)

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2017
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
CC	5328
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Extended Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.9in, 200.4cm; Extended Cab Pickup; 4WD
Engine VIN Code	R
Region	United States (USA)

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2017
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	78.8in, 200.2cm; Extended Cab Pickup; Force II Cat Back System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2014
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	78.8in, 200.2cm; Extended Cab Pickup; RWD; Flowmaster Force II Cat-back Exhaust System; Moderate sound
Region	United States (USA)
Engine VIN Code	R
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2014
Ending Year	2014
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.8in, 200.2cm; Extended Cab Pickup; RWD
Region	United States (USA)
Engine VIN Code	R
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2014
Ending Year	2014
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	69.3in, 176.0cm; Crew Cab Pickup; Force II Cat Back System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2014
Ending Year	2014
Engine Type	V6
Liter	4.3
CID	262
CC	5328
Engine Size	4.3L/262
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	69.3in, 176.0cm; Crew Cab Pickup; Force II Cat Back System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2019
Ending Year	2019
Engine Type	V6
Liter	4.3
CID	262
CC	5328
Engine Size	4.3L/262
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	69.3in, 176.0cm; Crew Cab Pickup; RWD
Region	United States (USA)
Engine VIN Code	R

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2019
Ending Year	2019
Engine Type	V6
Liter	4.3
CID	262
CC	5328
Engine Size	4.3L/262
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	69.3in, 176.0cm; Extended Cab Pickup; 4WD; Flowmaster Force II Cat-back Exhaust System; Moderate sound
Region	United States (USA)
Engine VIN Code	R

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2019
Ending Year	2019
Engine Type	V6
Liter	4.3
CID	262
CC	5328
Engine Size	4.3L/262
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.8in, 200.2cm; Crew Cab Pickup; Force II Cat Back System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2019
Ending Year	2019
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	78.8in, 200.2cm; Crew Cab Pickup; Force II Cat Back System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R
CC	5328

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2019
Ending Year	2019
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	69.3in, 176.0cm; Extended Cab Pickup; RWD
Region	United States (USA)
Engine VIN Code	R
CC	5328

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2017
Ending Year	2019
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.9in, 200.4cm; Crew Cab Pickup; Force II Cat Back System; Does Not Fit Crew Cab 2WD w/2 Pc Driveshaft, Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R
CC	5328

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2017
Ending Year	2014
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	69.3in, 176.0cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.9in, 200.4cm; Crew Cab Pickup; Force II Cat Back System; Does Not Fit Crew Cab 2WD w/2 Pc Driveshaft, Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R
CC	5328

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2017
Ending Year	2014
Engine Type	V6
Liter	4.3
CID	262
CC	5328
Engine Size	4.3L/262
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	69.3in, 176.0cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	78.9in, 200.4cm; Extended Cab Pickup; Force II Cat Back System; Does Not Fit Crew Cab 2WD w/2 Pc Driveshaft, Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2017
Ending Year	2014
Engine Type	V6
Liter	4.3
CID	262
CC	5328
Engine Size	4.3L/262
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	69.3in, 176.0cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	78.8in, 200.2cm; Extended Cab Pickup; Force II Cat Back System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2017
Ending Year	2015
Engine Type	V6
Liter	4.3
CID	262
CC	5328
Engine Size	4.3L/262
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	78.8in, 200.2cm; Extended Cab Pickup; Force II Cat Back System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2017
Ending Year	2015
Engine Type	V6
Liter	4.3
CID	262
CC	5328
Engine Size	4.3L/262
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	4WD
Application Notes	69.3in, 176.0cm; Crew Cab Pickup; Force II Cat Back System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; Incl. 2.5 in. Tailpipes/Super 44(TM) Delta Flow Mufflers/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Region	United States (USA)
Engine VIN Code	R

Make	GMC
Model	SIERRA 1500 LIMITED
Submodel	SLT
Beginning Year	2017
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	78.8in, 200.2cm; Crew Cab Pickup; 4WD; Flowmaster Force II Cat-back Exhaust System; Moderate sound
Region	United States (USA)
Engine VIN Code	R
CC	5328

Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2015
Ending Year	2015
Engine Type	V8
Liter	5.3
CID	325
Engine Size	5.3L/325
Engine Family	GM Gen V Gas/Electric hybrid V8
Body Style	Standard Cab Pickup
Truck Bed Length in. (AAIA)	97.8in, 248.4cm
Transmission	Automatic
Drivetrain	RWD
Application Notes	78.8in, 200.2cm; Crew Cab Pickup; 4WD
Region	United States (USA)
Engine VIN Code	R
CC	5328

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Flowmaster Force II Exhaust Systems 817666 System, II, Cat-back, Single In/Dual Out, Stainless, Natural, Chevy, GMC, 5.3L, Automatic, Kit

Flowmaster Force II Exhaust Systems 817666 System, II, Cat-back, Single In/Dual Out, Stainless, Natural, Chevy, GMC, 5.3L, Automatic, Kit

Description

Part Type

Specifications

Reference Information

Compatibility

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