Page 696 - 2021 Sierra Catalog

Engine/Model
MODULAR GASKET APPLICATION
Years
1992 1993-96 1977-85 1977-85 1986 1986 1987-95 1987-95 1987-95 1975-86 1975-86 1975-86 1986 1986 1986 1987-95 1996-97 1987-95 1996-97 1987-95 1996-97 1977-92 1977-92 1977-92 1988-91 1992-94 1995-97 1992-94 1995-97 1992-94 1995-97 1990-92 1990-92 1993-97 1993-97 1971-77 1975-77 1975-77
➀ Full circle rear crankshaft seal, one piece oil pan gasket ➁ 3.8L models require 18-1211 rear crank seal
➂ Starboard dip stick models require 18-0411 oil pan gasket set
➃ Four piece oil pan set
➄ Head & valve cover gaskets included in valve grind kit
Serial No.
Short Block
Valve Grind Kit
18-1278 18-1278 18-1266 18-1266 18-1266 18-1266 18-1267 18-1267 18-1267 18-1266 18-1266 18-1266 18-1266 18-1266 18-1266 18-1267 18-1267 18-1267 18-1267 18-1267 18-1267 18-1257 18-1257 18-1257 18-1259 18-1258 18-1258 18-1258 18-1258 —
— 18-1259 18-1259 — — 18-1273 18-1273 18-1273
Chevy 262/4.3L
Chevy 262/4.3L
Chevy 305/5.0L
Chevy 305/5.0L
Chevy 305/5.0L
Chevy 305/5.0L
Chevy 305/5.0L
Chevy 305/5.0L
Chevy 305/5.0L
Chevy 350/5.7L
Chevy 350/5.7 Inboard
Chevy 350/5.7 (Rev.Rota) Inboard
D714370-F802999 ➀ ➄ 18-1270 D714370-F802999 ➀ ➄ 18-1270 4762210-B525981 ➂ ➄ 18-1265 4762210-B525981 ➂ ➄ — A482027-B525981 ➀ ➄ 18-1258 A482027-B525981 ➀ ➄ 18-1263 B525982 & Later ➀ ➄ ➇ — B522506 & Later ➀ ➄ ➇ — B522506 & Later ➀ ➄ 18-1263 4175500-B525982 ➂ ➄ ➍ 18-1265 4498701-B522506 ➂ ➄ 18-1265 4498701-B522506 ➂ ➄ — 6218462-B522506 ➀ ➄ — A492879-B522506 ➀ ➄ — A492879-B522506 ➀ ➄ 18-1263 B525982 & Later ➀ ➄ ➇ — B525982 & Later ➀ ➄ ➇ — B522506 & Later ➀ ➄ 18-1263 B522506 & Later ➀ ➄ 18-1263 B522506 & Later ➀ ➄ 18-1263 B522506 & Later ➀ ➄ 18-1263 4623115-D937001 ➄ 18-1256 4623110 & Later ➄ 18-1256 4623110 & Later ➄ ➇ 18-1256 B721206-D805068 ➄ 18-1256 D603118 & Later ➄ 18-1261 D603118 & Later ➄ 18-1261 D715494 & Later ➄ 18-1261 D715494 & Later ➄ 18-1261 D805069 & Later ➄ 18-1261 D805069 & Later ➄ 18-1261 C84992-F213244 ➄ 18-1256 C878221-D857199 ➄ 18-1256 D824589 & Later ➄ 18-1261 D857200 & Later ➄ 18-1261 3108723-4887829 ➃ ➄ — 4173000-4902304 ➃ ➄ — 4173000-4902304 ➃ ➄ ➊ —
➆ Intake/exhaust manifold gasket included in kit
➇ Rear main crankshaft seal also required
➊ Crankshaft seals also required
➋ Models with cast push rod cover require 18-0328 ➌ Crankshaft seals not included in short block kit ➍ Use 18-4349 for serial no.6218462-B525981
Gen II Gen II
(Rev. Rota.)
( 1 Pc. Rm Seal)
(Rev. Rota.) (1 Pc. Rm Seal)
Inboard (Rev.Rota) Inboard
Chevy 350/5.7L Chevy 350/5.7L Chevy 350/5.7L Chevy 350/5.7L Chevy 350/5.7L Chevy 350/5.7L Chevy 350/5.7L Chevy 350/5.7L Chevy 350/5.7L Chevy 454/7.4L Chevy 454/7.4L Chevy 454/7.4L Chevy 454/7.4L
(1Pc. Rm Seal)
(1Pc. Rm Seal) Inboard (Rev.Rota)(1 Pc. Rm Seal)
Inboard
Inboard
(Rev.Rota.) Inboard (Rev. Rota.) Inboard
Inboard (Rev.Rota.) Inboard (Sq. Ports)
Chevy 454/7.4L Gen V
Chevy 454/7.4L
Chevy 454/7.4L
Chevy 454/7.4L
Chevy 454/7.4L
Chevy 454/7.4L
Chevy 502/8.2L
Chevy 502/8.2L
Chevy 502/8.2L
Chevy 502/8.2L
Ford 302/5.0L
Ford 351/5.8L
Ford 351/5.8L (Rev. Rota.)
Gen V
Gen V Inboard Gen V Inboard Gen V (Sq. Ports) Gen V ( Sq. Ports)
Inboard
Gen V
Gen V Inboard
678
➎ For models with one piece rear main seal use18-1206 kit
and 18-0362 oil pan gasket
INTERNAL ENGINE COMPONENTS — Modular Gasket Kits
INTERNAL ENGINE COMPONENTS — Modular Gasket Kits