Home / Shop / Flowmaster 70 Series Big Block II 409 Stainless Steel 3 Inch Muffler 853072 Muffler, II, Oval, Stainless, in. Center Inlet, in. Offset Outlet, 22 in. Case Length

Flowmaster 70 Series Big Block II 409 Stainless Steel 3 Inch Muffler 853072 Muffler, II, Oval, Stainless, in. Center Inlet, in. Offset Outlet, 22 in. Case Length

SKU: FLO853072

Mufflers

Flowmaster

Flowmaster 70 Series Big Block II 409 Stainless Steel 3 Inch Muffler 853072 Muffler, II, Oval, Stainless, in. Center Inlet, in. Offset Outlet, 22 in. Case Length

SKU: FLO853072

Mufflers

IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

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Description

These 70 Series Big Block II mufflers are designed around a large case for maximum volume and efficiency. They're 2 in. narrower than the original Big Block muffler, making them easier to install into tight areas. Other features include a mild, mellow exhaust tone and a resonant tuning chamber for reduced interior sound levels.

Part Type

Mufflers

Data: v4.2 - Upd: 2026-10-16 04:08:39

Specifications

Product Attributes - Brand: Flowmaster
Product Attributes - Manufacturer's Part Number: 853072
Product Attributes - Part Type: Mufflers
Product Attributes - Product Line: Flowmaster 70 Series Big Block II Mufflers
Product Attributes - UPC: 700042025510
Product Attributes - Muffler Material: 409 stainless steel
Product Attributes - Inlet Diameter (in.): 3.00 in.
Product Attributes - Outlet Diameter (in.): 3.00 in.
Product Attributes - Inlet Quantity: 1
Product Attributes - Outlet Quantity: 1
Product Attributes - Electronic Valve: No
Product Attributes - Internal Construction: Chambered
Product Attributes - Inlet Location: Center
Product Attributes - Outlet Location: Offset
Product Attributes - Case Shape: Oval
Product Attributes - Reversible: No
Product Attributes - Muffler Color: Black
Product Attributes - Case Exterior Length (in.): 22.00 in.
Product Attributes - Overall Length (in.): 28.00 in.
Product Attributes - Thickness (in.): 5.000
Product Attributes - Width (in.): 10.000 in.
Product Attributes - Outlet Style: Standard, without tip
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.

Reference Information

Brand Name/s	Flowmaster
StreetFX SKU	flo853072
SFX Item ID	4984175
Supplier Item Code	4984175
Manufacturer SKU	853072
Manufacturer UPC	700042025510
Alternative References	FLM853072

Compatibility

Application Data

Universal Yes

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2002
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2005
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	BASE

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2002
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2005
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	BASE

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2002
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2005
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	BASE

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2002
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2005
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	BASE

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2005
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2005
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	BASE

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2005
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2005
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	BASE

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2005
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2005
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	BASE

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2005
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2005
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	BASE

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2002
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2002
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	LS

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2002
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2002
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	LS

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2005
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LS

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2005
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LS

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2005
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LS

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2005
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LS

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2005
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LS

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2005
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LS

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2005
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LS

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2005
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LS

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2002
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2002
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	LT

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2002
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2002
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 GAS
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	T
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Submodel	LT

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2005
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LT

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2005
CC	5328
CID	325
Drivetrain	4WD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LT

Application Notes	3.00 Inlet 3.00 Outlet ; 3.00 Inlet 3.00 Outlet , 3.00 Inlet 3.00 Outlet
Beginning Year	2005
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LT

Application Notes	70 Series™ Big Block II Muffler; 3.0 in. Center Inlet/Offset Outlet; Case Dimensions 5 in. x 10 in. x 22 in.; 28 in. Overall Length; 409 Stainless Steel, Not Direct Fit-Some Adaptation Required
Beginning Year	2005
CC	5328
CID	325
Drivetrain	RWD
Ending Year	2006
Engine Family	CHEVY SMALL BLOCK GEN III/IV LS V8 FLEX FUEL
Engine Size	5.3L/325
Engine Type	V8
Engine VIN Code	Z
Liter	5.3
Make	CHEVROLET
Model	AVALANCHE 1500
Region	USA
Submodel	LT

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Flowmaster 70 Series Big Block II 409 Stainless Steel 3 Inch Muffler 853072 Muffler, II, Oval, Stainless, in. Center Inlet, in. Offset Outlet, 22 in. Case Length

Flowmaster 70 Series Big Block II 409 Stainless Steel 3 Inch Muffler 853072 Muffler, II, Oval, Stainless, in. Center Inlet, in. Offset Outlet, 22 in. Case Length

Description

Part Type

Specifications

Reference Information

Compatibility

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