The H&R 50739 Sport Spring kit is a set of lowering coil springs for the Pontiac Grand Am. It is meant to replace the factory springs while the existing struts stay in place. Lowering the car tightens the gap between tire and fender and lowers the center of gravity, so the body leans less in corners than it does on stock springs. Before paying more than a generic spring set costs, check that the springs match your exact model year and engine, because fitment is the detail most likely to go wrong.
Fitment is the first thing to verify. Listings disagree on the start year, with some showing 1998 and most showing 1999, and their trim and engine coverage differs. Match your VIN against the manufacturer's fitment data before ordering. Owners on user forums warn that lowered springs with struts have a drawback because it affects the overall suspension travel & alignments become difficult. Plan on a professional wheel alignment after installation. Searches like 1999-2003 Grand Am lowering springs, Grand Am sport spring install, and H&R 50739 strut spring kit lead to this part.
Fitment data varies between sources, with different start years and different trim and engine coverage. Confirm your model year, trim, and engine with the manufacturer before ordering.
Owners on user forums report that lowered springs on strut-based suspensions change alignment and make it harder to dial in, so a wheel alignment is commonly recommended afterward.
Owners on user forums describe the front springs as a manageable job. One enthusiast estimated about three hours for both with proper tools, and noted that removing the top strut nut is the main snag, since you can rent, or buy the 5$ socket and it'll be a snap. Another owner reported doing both front springs with hand tools. H&R publishes installation & safety instructions for its springs, so review them before you start. Use a spring compressor if you have not worked on struts before, and schedule an alignment once the car is back on the ground.
