1977 Pontiac Bonneville Auto Trans Extension Housing Seal
Navigate our online catalogue to find original replacement Auto Trans Extension Housing Seals specifically designed to fit a 1977 Pontiac Bonneville.




Auto Trans Extension Housing Seal
$16.88
$15.19
In Stock
Condition: New
Ships: Monday Oct. 6th
Pick-Up: Ready in 1 Hour Monday Oct. 6th
Pick-Up: Ready in 1 Hour Monday Oct. 6th
Required Per Vehicle: 1
Vehicle fitment:
Transmission Control Type: Automatic; Transmission Code: THM400; Transmission Speeds: 3; Transmission Type: Transmission;
Transmission Control Type: Automatic; Transmission Code: THM400; Transmission Speeds: 3; Transmission Type: Transmission;
Vehicle Fitment Notes:
1.69 in. Shaft
1.69 in. Shaft



Auto Trans Extension Housing Seal
$16.88
$15.19
In Stock
Condition: New
Ships: Monday Oct. 6th
Pick-Up: Ready in 1 Hour Monday Oct. 6th
Pick-Up: Ready in 1 Hour Monday Oct. 6th
Required Per Vehicle: 2
Vehicle fitment:
Transmission Control Type: Automatic; Transmission Code: THM400; Transmission Speeds: 3; Transmission Type: Transmission;
Transmission Control Type: Automatic; Transmission Code: THM400; Transmission Speeds: 3; Transmission Type: Transmission;
Vehicle Fitment Notes:
1.69 in. Shaft
1.69 in. Shaft



Auto Trans Extension Housing Seal
$12.25
$11.02
10+ In Stock
Condition: New
Ships: Monday Oct. 6th
Pick-Up: Ready in 1 Hour Monday Oct. 6th
Pick-Up: Ready in 1 Hour Monday Oct. 6th
Required Per Vehicle: 1
Vehicle fitment:
Transmission Control Type: Automatic; Transmission Code: THM400; Transmission Speeds: 3; Transmission Type: Transmission;
Transmission Control Type: Automatic; Transmission Code: THM400; Transmission Speeds: 3; Transmission Type: Transmission;
Vehicle Fitment Notes:
1.89 in. Shaft
1.89 in. Shaft



Auto Trans Extension Housing Seal
$12.25
$11.02
10+ In Stock
Condition: New
Ships: Monday Oct. 6th
Pick-Up: Ready in 1 Hour Monday Oct. 6th
Pick-Up: Ready in 1 Hour Monday Oct. 6th
Required Per Vehicle: 2
Vehicle fitment:
Transmission Control Type: Automatic; Transmission Code: THM400; Transmission Speeds: 3; Transmission Type: Transmission;
Transmission Control Type: Automatic; Transmission Code: THM400; Transmission Speeds: 3; Transmission Type: Transmission;
Vehicle Fitment Notes:
1.89 in. Shaft
1.89 in. Shaft







Auto Trans Extension Housing Seal
$6.28
$5.39
In Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Required Per Vehicle: 1
Vehicle fitment:
Transmission Control Type: Automatic; Transmission Code: THM350; Transmission Speeds: 3; Transmission Type: Transmission;
Transmission Control Type: Automatic; Transmission Code: THM350; Transmission Speeds: 3; Transmission Type: Transmission;







Auto Trans Extension Housing Seal
$6.28
$5.39
In Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Required Per Vehicle: 1
Vehicle fitment:
Transmission Control Type: Automatic; Transmission Code: THM475/M40; Transmission Speeds: 3; Transmission Type: Transmission;
Transmission Control Type: Automatic; Transmission Code: THM475/M40; Transmission Speeds: 3; Transmission Type: Transmission;



Auto Trans Extension Housing Seal
$10.39
Limited Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.9L 301ci V8 (4.00x3.00; 101.6x76.2); Transmission Code: THM350;
Engine Base: 4.9L 301ci V8 (4.00x3.00; 101.6x76.2); Transmission Code: THM350;
Vehicle Fitment Notes:
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output



Auto Trans Extension Housing Seal
$10.39
Limited Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Transmission Code: THM350;
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Transmission Code: THM350;
Vehicle Fitment Notes:
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output



Auto Trans Extension Housing Seal
$10.39
Limited Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Transmission Code: THM350;
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Transmission Code: THM350;
Vehicle Fitment Notes:
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output



Auto Trans Extension Housing Seal
$10.39
Limited Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Vehicle Fitment Notes:
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output



Auto Trans Extension Housing Seal
$10.39
Limited Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM350;
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM350;
Vehicle Fitment Notes:
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output
W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output



Auto Trans Extension Housing Seal
$4.48
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Transmission Control Type: Automatic; Transmission Code: THM350; Transmission Speeds: 3;
Transmission Control Type: Automatic; Transmission Code: THM350; Transmission Speeds: 3;



Auto Trans Extension Housing Seal
$4.48
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Transmission Control Type: Automatic; Transmission Code: THM475/M40; Transmission Speeds: 3;
Transmission Control Type: Automatic; Transmission Code: THM475/M40; Transmission Speeds: 3;

Auto Trans Extension Housing Seal
$7.57
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Transmission Code: THM350;
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Transmission Code: THM350;
Vehicle Fitment Notes:
Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring
Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring

Auto Trans Extension Housing Seal
$7.57
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Transmission Code: THM350;
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Transmission Code: THM350;
Vehicle Fitment Notes:
Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring
Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring

Auto Trans Extension Housing Seal
$7.57
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Vehicle Fitment Notes:
Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring
Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring

Auto Trans Extension Housing Seal
$7.57
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM350;
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM350;
Vehicle Fitment Notes:
Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring
Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring