2008 - 2013 Corvette: Service Bulletin: PF48 / PF48F Oil Filter Redesign

Model Year: 2008 - 2013 Corvette with LS3 Engine
Subject: PF48 / PF48F Oil Filter Redesign
Source: Chevrolet Dealer Service Technical Bulletin
Number: Ref. number: Parts / Product / G_0000190758
Date: 4/28/2014

To: Chevrolet, Buick, GMC, and Cadillac Dealers

DESCRIPTION:

ACDelco Oil Filters PF48 (GM# 89017524) and the Durapack version, PF48F (GM# 19167894) are transitioning to a new design that offers improved performance. The new part numbers are: PF48E(GM# 19303975) and PF48F (GM# 19303974). This will be a rolling change and the old version will not be available once stock is depleted.

ADDITIONAL INFORMATION:

The PF48E primary performance improvement relates to the relief valve design. The PF48E has a compression spring loaded nylon poppet that outperforms the current valve design. Other benefits:

Element integrity (collapse strength) is increased by 25%. This is because the nylon cores are perfectly round.
Filter media, which is unchanged, is no longer potted in adhesive which blocks filtration area at each end.
Filtration performance (efficiency and capacity) are both unchanged.
The filter shell configuration is unchanged. Existing cap wrenches continue to fit.
Hydrostatic burst and impulse fatigue performance are both unchanged.
Relief valve performance is much improved and statistically more stable.
Hot oil durability is improved by elimination of adhesive.
Cold weather performance (-30 C) with dexos 1 oil is excellent.
Improved level of robustness to water accumulation.
Nitrile material used in the sealing gasket and the anti-drainback valve is unchanged.
PF48E filters meet performance specifications as defined by GM Powertrain.
PF48E filters will be used in OE production in the near future.

Article ID: 851
Created: August 15, 2014
Last Updated: August 15, 2014

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