1999 Thermostats, Housings & Fillers

Water Neck, Billet Aluminum, Black Anodized, Straight Up, -20 AN Male Threads, Chevrolet, Small/Big Block, Each

Part Number: BSP-BLK90119

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Water Neck, Aluminum, Polished, 15 Degree, Chevy, Big/Small Block, Each

Part Number: AFC-80312-15

4.59 out of 5 stars ( 34 )

Estimated Ship Date: Today

Water Neck Spacer, Riser, 1/2 in. NPT Center Port, Aluminum, Natural, Each

Part Number: VTA-706004

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Straight -16 AN Male Thread, Ford, Small Block Windsor, Each

Part Number: MOR-63455

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

Straight Thermostat Housing For LS Gen 3 Water Pump

Part Number: ICB-551836-LS1ST

Not Yet Reviewed

Estimated Ship Date: Today

Water Neck, 90 degree, 1.50 in. Hose Barb, Billet Aluminum, Clear Anodized, Buick, Chevy, GMC, Pontiac, Small Block LS, Each

Part Number: CVS-TSH5CL

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Black Anodized, Straight Up, -16 AN Male Threads, Chevy, LS, Each

Part Number: BSP-BLK90900

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Natural, Radiator Cap Extension, 5.75 in. Tall, Chevy, Big/Small Block, Each

Part Number: MOR-63467

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Thermostat, Mechanical, Standard-flow, 160 degrees, Copper/Stainless Steel, Ford, Lincoln, Mercury, Each

Part Number: MIO-MMTS-MUS-05L

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Red, 90 Degree, Swivel, Chevy, Each

Part Number: SUM-371110-RE

5.0 out of 5 stars ( 11 )

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Natural, Radiator Cap Filler, Chevy, Big/Small Block, Each

Part Number: MOR-63466

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Water Neck, Aluminum, Black Anodized, O-ring, 15 Degree, Each

Part Number: BSP-BLK90334

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Water Neck, Aluminum, Black Anodized, O-Ring, Straight, 1.500 in. Outlet, Chevy, LS1/LS2/LS6, Each

Part Number: HSE-4910-347-242

Not Yet Reviewed

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Black Anodized, Straight Up, Chevy, Mopar, Big Block, Small Block, Each

Part Number: MEZ-WN0916S

Not Yet Reviewed

Estimated Ship Date: Today

Water Neck, Spec-R, Aluminum Natural, Chevy, Cadillac, GMC, Pontiac, Hummer, Each

Part Number: SNN-MRD102

Not Yet Reviewed

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Black, 90 Degree, Swivel, Chevy, Each

Part Number: SUM-371110-BK

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Nov 28, 2025 if ordered today

Water Neck, Billet Aluminum, Black Anodized, Straight Up, Chevy, Mopar, Big Block, Small Block, Each

Part Number: MEZ-WN0912S

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Thermostat, Mechanical, Standard-flow, 160 degrees, Copper/Stainless Steel, Chevy, GMC, Pontiac, Isuzu, Each

Part Number: MIO-MMTS-VET-97L

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Nov 25, 2025 if ordered today

Thermostat, 180 Degrees, Each

Part Number: GRN-53080S

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Water Necks and Thermostat Housings, Straight, Swivel, Aluminum, Polished, 1.500 in. Outlet Size, Dodge, Jeep, 5.2L, 5.9L, Each

Part Number: MCH-BTH-401-05

Not Yet Reviewed

Estimated Ship Date: Today

Water Neck, Aluminum, Black Anodized, Straight Up, -16 AN Male Threads, 3/8 in. NPT Ports, Chevrolet, Each

Part Number: JOE-36000

Not Yet Reviewed

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Clear Anodized, Swivel, 90 Degree, Chevy, Big/Small Block, Each

Part Number: CSI-912C

3.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Bright Polished, 80 Degree, Chevy, LS, Each

Part Number: EMS-MS106-90P

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Thermostat, Standard-flow, 180 degrees, Copper/Stainless Steel, Dodge, Ram, Each

Part Number: MIO-MMTS-RAM-99L

1.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

Water Neck, Billet Aluminum, Natural, Straight Up, -20 AN Male Threads, Chevy, LS, Each

Part Number: BSP-90920

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today