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4.3L MPI ALPHA-BRAVO EC - 1A637496 and Up - Cylinder Block Camshaft Crankshaft and Balanceshaft

Section Drawing: (Hover or click to view larger)



Ref # Part Class Part Number Description Comments Qty Note
1 0023 OEM: 525-23-818465, Sierra: 676-18-1300 BEARING SET 5 Pair (Standard) 1 [1]
1 0023 OEM: 525-23-818466 BEARING SET 5 Pair (.001 Undersize) AR  
1 0023 OEM: 525-23-818467 BEARING SET 5 Pair (.010 Undersize) AR  
1 0023 OEM: 525-23-818468 BEARING SET 5 Pair (.020 Undersize) AR  
2 0017 OEM: 525-17-43504 PIN Dowel   2 [1]
3 0429 OEM: 525-429-804911001 CRANKSHAFT   1 [1]
4 0028 OEM: 525-28-8184851 KEY Crankshaft   2 [1]
5   NSS NOT SOLD SEPARATE Cap- Crankshaft Bearing   0 [1]
6 0010 888778 SCREW Crankshaft Bearing Cap   8 [1]
7 0016 OEM: 525-16-54790 STUD Crankshaft Bearing Cap   5 [1]
8 0023 OEM: 525-23-85674 BEARING SET   1 [1]
9 0000 OEM: 525-17341T GUIDE Lifter Lifter   6 [1]
10 0000 OEM: 525-8118441 LIFTER Roller   12 [1]
11 0431 OEM: 525-431-803186 CAMSHAFT   1 [1]
12 0017 353121 PIN Dowel   1 [1]
13 0000 OEM: 525-8243311 RETAINER Lifter Guide   2 [1]
14 0010 8243321 SCREW (.312-18 x .625)   3 [1]
15 0022 OEM: 525-22-864669 FITTING   1  
16 0000 OEM: 530-881879T11 SENSOR Pressure (0 - 100 PSI) Oil Pressure   1  
17 0000 815425T SENDER ASSEMBLY Oil Pressure   1  
17 0000 OEM: 525-37293T SENDER ASSEMBLY Oil Pressure (Dual Station) OPT  
18 0013 OEM: 525-13-26996 LOCKWASHER (#10) Stainless Steel   1  
19 0011 OEM: 525-11-68219 NUT (#10-32) Stainless Steel   1  
20 0000 OEM: 525-8241481 BALANCED SHAFT   1  
21   NSS NOT SOLD SEPARATE BEARING   1  
22 0031 OEM: 525-31-824150 BEARING Needle Rear   1  
23 0000 824153 RETAINER Balance Shaft   1  
24 0010 OEM: 525-10-845943 SCREW (.250-20 x .500)   2  
25 0043 OEM: 525-43-8241511 GEAR KIT Balance Shaft   1  
26 0010 824152 SCREW   1  
27 0010 824329 SCREW (.312-18 x .750)   3  
28 0022 OEM: 525-22-8M2005622 FITTING Reducer (M28 x .250) (Port) 1  
29 0022 OEM: 525-22-862603 FITTING   2  
30 0025 OEM: 525-25-627021 O-RING (.301 x .070)   2  
31 0022 OEM: 525-22-862225 FITTING   2  
32 0022 OEM: 525-22-328022, Sierra: 676-18-4263 PLUG Pipe (.125-27) Brass Top of Block   1  
- 0092 809825 RTV SILICONE (3 Ounce Tube) Metallic Blue Where Applicable   1  
- 0092 34227Q02 SEALING COMPOUND Where Applicable   1 [2]
- 0000 879150A31 LONG BLOCK (4.3L)   1 [3]

PART NOTES:

[1] - Component of Long Block Assembly 879150A31


[2] - Alternate part numbers:

34227Q02QS


[3] - Alternate part numbers:

879150A31QS

879150R31Reman

8M0150280Reman

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