certain delphi fuel pressure regulators, p/nos. fp10020-11b1, fp10026-11b1, and fp10027-11b1, sold after january 9, 2007, as aftermarket equipment for various passenger vehicles listed above. the universal pressure regulators (upr) were produced without an o'ring and retainer.
certain passenger vehicles equipped with rear suspension knuckle bolts that are not to specification and could fracture under high loads that can occur in some driving conditions.