Find any Amazon.com product's deals and best prices with our free Amazon deal finder and price tracker. Simply paste the product link (URL) or search by name in the box above. You'll get full product information, Deal Score, and all current deals. Shop smarter with the best Amazon deals finder in the USA.
x
Sorry, Something went wrong!
BDFHYK Coolant Reservoir Expansion Tank with Cap for Buick Lucerne 2006-2011 4.6L V8, for Cadillac DTS 2006-2011 4.6L V8, Pressurized Radiator Overflow Tank, Replaces 603-237 25760633
✅ In stock
F
Grade
Analysis Confidence
55%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Nov 3, 2026 5:41 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰At 42% above its usual rate, this is currently priced higher than what most shoppers have paid.
- 📉Better-priced windows have occurred before, though not frequently — today's price is reasonably competitive.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
Amazon.com
Product Details
✓FITMENT FOR BUICK, CADILLAC:For Buick Lucerne 2006-2011; for Cadillac DTS 2006-2011. Both listed applications use the 4.6L 281 cu. in. V8 Naturally Aspirated Gas engine. Verify the exact brand, model, year, engine and original reservoir before ordering.
✓PRESSURIZED 1.1 L CONFIGURATION:The included cap has a listed maximum pressure rating of 124 ±15 kPa. The 1.1 L capacity is measured at the MAX fill level rather than the brim, leaving the intended space for coolant expansion. Correct pressure retention also depends on the cap neck, hose connections, clamps and other cooling-system components.
✓VISIBLE LOWER RESERVOIR:The black upper section and translucent lower section combine defined connection areas with easier coolant-level inspection. The translucent section also helps identify discoloration or dried residue without opening a hot cooling system. PP construction is rated from -30°C to 120°C. This configuration does not provide a coolant-level sensor function.
✓REPLACEMENT REFERENCES:Cross-references 603-237, 25760633 and FRT1227C. Compare the replacement number, reservoir shape, mounting points, cap neck and hose connections before ordering. Similar-looking coolant tanks may use different capacities or connection layouts across other models, years or engines.
✓BUILT AROUND REAL REPLACEMENT NEEDS:Cracks, seam or hose-neck seepage, dried coolant residue, repeated coolant top-offs or a falling coolant level may indicate deterioration of the original reservoir or its connections. BDFHYK treats the tank as part of a pressurized cooling system: cap rating, sealing surfaces, hoses, clamps, correct filling and bleeding all affect operation. Continued coolant loss or elevated engine temperature requires complete cooling-system diagnosis.
⚙️ Specifications
Buick Cadillac
Applicable brands
Chevy
603-237
OE
603-338
PP Plastics
OE originals
Manufacturer
BDFHYK
Brand
BDFHYK
Model
Coolant Overflow Tank
Item Weight
3.68 pounds
Package Dimensions
12.8 x 12.2 x 9.45 inches
Item model number
603-237
