With crude oil prices at their highest levels in two years and showing no sign of abating soon, consumers and businesses are starting to feel the pinch as the prices of gasoline, heating oil, and diesel and jet fuel begin to rise.

Industry analysts and economists warn that because of high oil prices, Americans in the coming weeks and perhaps months are likely to be paying more for nearly everything, from fuel to roofing materials to plastics. And the longer prices remain high, the greater the threat they pose to the still-tepid economic recovery, analysts and economists say.

"This would add another weight to the recovery, but not derail it," said Mark M. Zandi, chief economist at Economy.com, a consulting firm in West Chester, Pa. "But it is bad in the sense that we will be struggling to maintain growth."

The price of crude oil has risen by almost $7, or 27 percent, since early November. In New York, crude oil for February delivery rose 23 cents yesterday, to $32.72 a barrel, the highest since November 2000.

Analysts point out that there is a lag of several weeks between an increase in crude oil prices and a commensurate rise in the prices of petroleum products. Just this week, however, the average retail prices of diesel fuel and gasoline rose by 4 cents, or about 3 percent, according to data collected by the Energy Information Administration, the analytical arm of the Energy Department.

"When crude goes up, it's just a matter of time before it hits you at the pump," said Mary Rose Brown, a spokeswoman for Valero Energy, a large independent refining company based in San Antonio. "Our retail guys are saying that an increase of 5 to 10 cents is a reasonable expectation."

That might prove a conservative estimate, some traders and analysts said. The forces that are pushing up prices seem, to oil traders, to be worsening. A general strike in Venezuela against the government of President Hugo Chávez has halted nearly all oil production and reduced exports to a trickle.

Venezuela is the fourth-largest exporter of oil to the United States, accounting for 14 percent of crude oil imports. Although government officials in Venezuela have vowed to restore production soon, oil traders on the global markets are skeptical, said Rick Smid, an energy futures broker at Fimat, a subsidiary of Société Générale.

The Venezuelan shortfalls have buffeted the market as worries rise again about a possible war between the United States and Iraq and its effect on oil supplies from the Persian Gulf.

For high oil prices to have a great effect on the economy, they have to be sustained for more than a month at $30 a barrel or more, said David Costello, an energy analyst at the Energy Information Administration. That prospect seems increasingly likely, especially as both sides in the Venezuelan dispute retrench.

It takes a month or two for higher crude oil prices to work their way through the refining and retail systems and to be felt by consumers, Mr. Costello said. That explains why price increases on the retail level are only being seen now, he and other analysts said. Conversely, if the Venezuelan conflict were resolved now, it would still take several weeks for retail prices to fall, they noted.

Industries heavily reliant on oil are already feeling the bite, Mr. Zandi and others said. The makers of textiles, paper, chemicals and plastics will be stuck with higher oil bills. "It will affect airlines and trucking significantly," Mr. Zandi said. "The airlines are already hard pressed, and this is one more thing to push them under water."

In the last month, the price of jet fuel at New York Harbor has risen nearly 15 percent, to 87.23 cents a gallon, according to the Energy Information Administration.

The region that relies most heavily on heating oil, the Northeast, may also face sharply higher prices, Mr. Zandi and others said. Heating oil prices are 18 percent higher than they were a year ago, according to the Energy Information Administration.

"New York City will be hit very hard," Mr. Zandi predicted, "much more than a place like Dallas or Southern California."

The effects of higher oil prices may ripple through industries that, at first glance, seem remote from oil. Consider roofing. The best asphalt for roofing comes from "heavy" crude oil produced in Venezuela. With those supplies gone, "people are scrambling already to find supplies," Ms. Brown of Valero said. "The cost of roofing will go up."

If the conflict in Venezuela were resolved and striking workers from the state oil company returned to their jobs, that would certainly bring more crude oil into the market and gradually deflate high prices. But few people believe such an outcome is likely anytime soon.

Instead, industry experts look to the Organization of the Petroleum Exporting Countries, of which Venezuela is a member. Other members said at a meeting earlier this month that the group would make up for shortfalls of Venezuelan exports if the strike continued.

OPEC members like Saudi Arabia and Kuwait are among the few countries that have the spare production capacity to replace the Venezuelan oil. But it remains uncertain what steps OPEC has taken so far. Moreover, it takes about 40 days for oil to be shipped from the Persian Gulf to the United States, which may mean that oil supplies in the Western Hemisphere may only be replenished later in January.

"The key thing now is how quickly and on what scale the other OPEC producers step up their production," said Daniel Yergin, the chairman of Cambridge Energy Research Associates, "and that will determine in a week or 10 days where oil prices will be.

"You could have replacement supplies in late January from the Persian Gulf. But all of that assumes that nothing happens anywhere else."