Auto parts maker Tenneco Automotive has reported stronger-than-expected quarterly earnings as it boosted sales and controlled costs.

According to Reuters, the maker of shock absorbers and mufflers reported net income of $US30 million, or 69 cents a share, up from $24 million, or 58 cents a share, in the year-earlier period.

Before one-off items, earnings rose to $31 million, from $20 million a year before, the report added.

Sales rose to a record $1.11 billion from $998 million as Tenneco credited higher volumes to new vehicle production, strengthening aftermarket sales in North and South America and the impact of the weaker US dollar, Reuters added.